feat: support Flutter stable channel (#581)

* feat: adjust toggle list block

* chore: upgrade Flutter to master channel

* chore: upgrade pbxproj

* fix: toolbar copy button not closing on mobile editor

* fix: formatting issues and add missing commas

* chore: add stable branch to GitHub Actions workflow

* chore: add missing trailing commas

* chore: adjust indentation padding in block component
configuration and unit tests

.github/workflows/test.yml

@@ -4,18 +4,17 @@ on:
   push:
     branches:
       - "main"
+      - "stable"
 
   pull_request:
     branches:
       - "main"
+      - "stable"
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true
 
-env:
-  FLUTTER_VERSION: "3.10.1"
-
 # 3 jobs are configured.
 # The first one runs tests on desktop OSs.
 # The second runs tests on iOS simulator.
@@ -34,11 +33,11 @@ jobs:
       - uses: subosito/flutter-action@v2
         with:
           channel: "stable"
-          flutter-version: ${{ env.FLUTTER_VERSION }}
           cache: true
 
       - name: Run tests
         run: |
+          flutter --version
           flutter pub get
           flutter analyze .
           dart format --set-exit-if-changed .