refactor: migrate deprecated .withOpacity() to .withValues(alpha:)

Author: sneurlax

lib/notifications/notification_card.dart

@@ -183,7 +183,7 @@ class NotificationCard extends ConsumerWidget {
               color: Theme.of(context)
                   .extension<StackColors>()!
                   .background
-                  .withOpacity(0.5),
+                  .withValues(alpha: 0.5),
             ),
           ),
       ],

lib/pages/buy_view/buy_form.dart

@@ -840,7 +840,7 @@ class _BuyFormState extends ConsumerState<BuyForm> {
                       ? Theme.of(context)
                             .extension<StackColors>()!
                             .currencyListItemBG
-                            .withOpacity(_hovering1 ? 0.3 : 0)
+                            .withValues(alpha: _hovering1 ? 0.3 : 0)
                       : Theme.of(
                           context,
                         ).extension<StackColors>()!.textFieldDefaultBG,
@@ -906,7 +906,7 @@ class _BuyFormState extends ConsumerState<BuyForm> {
                       ? Theme.of(context)
                             .extension<StackColors>()!
                             .currencyListItemBG
-                            .withOpacity(_hovering2 ? 0.3 : 0)
+                            .withValues(alpha: _hovering2 ? 0.3 : 0)
                       : Theme.of(
                           context,
                         ).extension<StackColors>()!.textFieldDefaultBG,

lib/pages/buy_view/buy_view.dart

@@ -73,7 +73,7 @@ class _BuyViewState extends ConsumerState<BuyView> {
             Container(
               color: Theme.of(
                 context,
-              ).extension<StackColors>()!.overlay.withOpacity(0.7),
+              ).extension<StackColors>()!.overlay.withValues(alpha: 0.7),
               height: MediaQuery.of(context).size.height,
               width: MediaQuery.of(context).size.width,
               child: const StackDialog(

lib/pages/exchange_view/exchange_coin_selection/exchange_currency_selection_view.dart

@@ -79,7 +79,7 @@ class _ExchangeCurrencySelectionViewState
               child: Container(
                 color: Theme.of(
                   context,
-                ).extension<StackColors>()!.overlay.withOpacity(0.6),
+                ).extension<StackColors>()!.overlay.withValues(alpha: 0.6),
                 child: const CustomLoadingOverlay(
                   message: "Loading currencies",
                   eventBus: null,

lib/pages/exchange_view/exchange_form.dart

@@ -113,7 +113,7 @@ class _ExchangeFormState extends ConsumerState<ExchangeForm> {
           child: Container(
             color: Theme.of(
               context,
-            ).extension<StackColors>()!.overlay.withOpacity(0.6),
+            ).extension<StackColors>()!.overlay.withValues(alpha: 0.6),
             child: const CustomLoadingOverlay(
               message: "Updating exchange rate",
               eventBus: null,

lib/pages/exchange_view/exchange_loading_overlay.dart

@@ -79,7 +79,7 @@ class _ExchangeLoadingOverlayViewState
             color: Theme.of(context)
                 .extension<StackColors>()!
                 .overlay
-                .withOpacity(0.7),
+                .withValues(alpha: 0.7),
             child: const CustomLoadingOverlay(
               message: "Loading Exchange data",
               eventBus: null,
@@ -93,7 +93,7 @@ class _ExchangeLoadingOverlayViewState
             color: Theme.of(context)
                 .extension<StackColors>()!
                 .overlay
-                .withOpacity(0.7),
+                .withValues(alpha: 0.7),
             child: Column(
               mainAxisAlignment: MainAxisAlignment.end,
               children: [

lib/pages/exchange_view/exchange_step_views/step_3_view.dart

@@ -231,7 +231,7 @@ class _Step3ViewState extends ConsumerState<Step3View> {
                                                   color: Theme.of(context)
                                                       .extension<StackColors>()!
                                                       .overlay
-                                                      .withOpacity(0.6),
+                                                      .withValues(alpha: 0.6),
                                                   child:
                                                       const CustomLoadingOverlay(
                                                         message:

lib/pages/exchange_view/exchange_view.dart

@@ -96,7 +96,7 @@ class _ExchangeViewState extends ConsumerState<ExchangeView> {
             Material(
               color: Theme.of(
                 context,
-              ).extension<StackColors>()!.overlay.withOpacity(0.6),
+              ).extension<StackColors>()!.overlay.withValues(alpha: 0.6),
               child: const CustomLoadingOverlay(
                 message: "Updating exchange data",
                 subMessage: "This could take a few minutes",

lib/pages/exchange_view/send_from_view.dart

@@ -579,7 +579,7 @@ class _SendFromCardState extends ConsumerState<SendFromCard> {
             children: [
               Container(
                 decoration: BoxDecoration(
-                  color: ref.watch(pCoinColor(coin)).withOpacity(0.5),
+                  color: ref.watch(pCoinColor(coin)).withValues(alpha: 0.5),
                   borderRadius: BorderRadius.circular(
                     Constants.size.circularBorderRadius,
                   ),

lib/pages/exchange_view/wallet_initiated_exchange_view.dart

@@ -113,7 +113,7 @@ class _WalletInitiatedExchangeViewState
             Material(
               color: Theme.of(
                 context,
-              ).extension<StackColors>()!.overlay.withOpacity(0.6),
+              ).extension<StackColors>()!.overlay.withValues(alpha: 0.6),
               child: const CustomLoadingOverlay(
                 message: "Updating exchange data",
                 subMessage: "This could take a few minutes",