Prep for Flutter 3.19 release (#2146)

Prepping for the next stable release in February.

---------

Co-authored-by: Brett Morgan <brett.morgan@gmail.com>

experimental/varfont_shader_puzzle/lib/page_content/wallpapers_flow.dart

@@ -328,7 +328,7 @@ See the License for the specific language governing permissions and
 limitations under the License.
   ''';
 
-  final String amstelvarLicense = ''' 
+  final String amstelvarLicense = '''
 Copyright 2016 The Amstelvar Project Authors (info@fontbureau.com)
 
 This Font Software is licensed under the SIL Open Font License, Version 1.1.

tool/flutter_ci_script_beta.sh

@@ -32,12 +32,9 @@ declare -ar PROJECT_NAMES=(
     "experimental/federated_plugin/federated_plugin_web"
     "experimental/federated_plugin/federated_plugin_windows"
     "experimental/linting_tool"
-    # TODO(DomesticMouse): re-enable once deps allow
-    # "experimental/material_3_demo"
     "experimental/pedometer"
     "experimental/pedometer/example"
-    # TODO(DomesticMouse): Dart formatting required
-    # "experimental/varfont_shader_puzzle"
+    "experimental/varfont_shader_puzzle"
     "experimental/web_dashboard"
     "flutter_maps_firestore"
     "form_app"

tool/flutter_ci_script_master.sh

@@ -32,11 +32,9 @@ declare -ar PROJECT_NAMES=(
     "experimental/federated_plugin/federated_plugin_web"
     "experimental/federated_plugin/federated_plugin_windows"
     "experimental/linting_tool"
-    "experimental/material_3_demo"
     "experimental/pedometer"
     "experimental/pedometer/example"
-    # TODO(DomesticMouse): Dart formatting required
-    # "experimental/varfont_shader_puzzle"
+    "experimental/varfont_shader_puzzle"
     "experimental/web_dashboard"
     "flutter_maps_firestore"
     "form_app"
@@ -45,7 +43,8 @@ declare -ar PROJECT_NAMES=(
     "infinite_list"
     "ios_app_clip"
     "isolate_example"
-    "material_3_demo"
+     # TODO(ewindmill): Add back when deps allow
+     # "material_3_demo"
     "navigation_and_routing"
     "place_tracker"
     "platform_channels"

tool/flutter_ci_script_stable.sh

@@ -32,8 +32,6 @@ declare -ar PROJECT_NAMES=(
     "experimental/federated_plugin/federated_plugin_web"
     "experimental/federated_plugin/federated_plugin_windows"
     "experimental/linting_tool"
-    # TODO(DomesticMouse): re-enable once deps allow
-    # "experimental/material_3_demo"
     "experimental/pedometer"
     "experimental/pedometer/example"
     "experimental/varfont_shader_puzzle"