Add explicit text labels to Flutter device selector (#8972)

See #8869

Author: jwren

resources/META-INF/plugin.xml

@@ -53,6 +53,7 @@
     <group id="Flutter.MainToolbarActions">
       <!--suppress PluginXmlCapitalization -->
       <action id="Flutter.DeviceSelector" class="io.flutter.actions.DeviceSelectorAction"
+              text="Flutter Device Selection"
               description="Flutter Device Selection"
               icon="FlutterIcons.Mobile"/>
       <action id="Flutter.DeviceSelectorRefresher" class="io.flutter.actions.DeviceSelectorRefresherAction"
@@ -66,7 +67,8 @@
     <group id="Flutter.MainToolbarActionsLegacy">
       <!--suppress PluginXmlCapitalization -->
       <action id="Flutter.DeviceSelectorLegacy" class="io.flutter.actions.DeviceSelectorAction"
-              description="Flutter Device Selection"
+              text="Flutter Device Selection (Legacy)"
+              description="Flutter Device Selection (Legacy)"
               icon="FlutterIcons.Mobile"/>
       <action id="Flutter.DeviceSelectorRefresherLegacy" class="io.flutter.actions.DeviceSelectorRefresherAction"
               text="Refresh Device List"