feat(dashboard): center extension page toast hints with the global UI (#6043)

* fix(dashboard): align extension page snackbar with full UI center (#6022)

* fix(dashboard): align snackbars with full UI center (#6022)

---------

Co-authored-by: Gargantua <22532097@zju.edu.cn>

Author: catDforD

dashboard/src/scss/_override.scss

@@ -17,6 +17,11 @@ html {
   flex: unset;
 }
 
+.v-overlay.v-snackbar {
+  --v-layout-left: 0px !important;
+  --v-layout-right: 0px !important;
+}
+
 .customizer-btn .icon {
   animation: progress-circular-rotate 1.4s linear infinite;
   transform-origin: center center;

dashboard/src/views/ExtensionPage.vue

@@ -387,6 +387,7 @@ const {
     elevation="24"
     :color="snack_success"
     v-model="snack_show"
+    location="bottom center"
   >
     {{ snack_message }}
   </v-snackbar>