fix: Incorrect duplicate filename handling when exporting files (#1541)

Author: dhruvanbhalara

lib/services/patcher_api.dart

@@ -237,9 +237,10 @@ void exportPatchedFile(String appName, String version) {
     if (outFile != null) {
       final String newName = _getFileName(appName, version);
       FlutterFileDialog.saveFile(
-        params: SaveFileDialogParams(
+          params: SaveFileDialogParams(
           sourceFilePath: outFile!.path,
           fileName: newName,
+          mimeTypesFilter: ['application/vnd.android.package-archive'],
         ),
       );
     }
@@ -287,7 +288,7 @@ Future<void> exportPatcherLog(String logs) async {
   final File log = File('${logDir.path}/$fileName');
   log.writeAsStringSync(logs);
   FlutterFileDialog.saveFile(
-    params: SaveFileDialogParams(
+     params:SaveFileDialogParams(
       sourceFilePath: log.path,
       fileName: fileName,
     ),

lib/ui/views/settings/settings_viewmodel.dart

@@ -210,7 +210,7 @@ class SettingsViewModel extends BaseViewModel {
         final String dateTime =
             DateTime.now().toString().replaceAll(' ', '_').split('.').first;
         await FlutterFileDialog.saveFile(
-          params: SaveFileDialogParams(
+            params: SaveFileDialogParams(
             sourceFilePath: outFile.path,
             fileName: 'selected_patches_$dateTime.json',
           ),
@@ -261,7 +261,7 @@ class SettingsViewModel extends BaseViewModel {
         final String dateTime =
             DateTime.now().toString().replaceAll(' ', '_').split('.').first;
         await FlutterFileDialog.saveFile(
-          params: SaveFileDialogParams(
+            params: SaveFileDialogParams(
             sourceFilePath: outFile.path,
             fileName: 'keystore_$dateTime.keystore',
           ),