fix: tooltips and overlay related issues (#4206)

* fix: align button tooltip

* chore: upgrade Flutter to latest beta version

* chore: bump version 0.4.0

* chore: minor ui update

* chore: update dependencies

* chore: upgrade flutter api

* chore: use beta channel

* chore: disable search bar and optimize toolbar ui

* chore: rename extra info keys

* feat: highlight text again after changing color

* chore: update iOS icon

* fix: lose children issues when converting block type

* chore: update editor version

* chore: update iOS icon and android navigation bar color

* fix: docker build issue

* fix: android keyboard issues

* chore: update icon

frontend/appflowy_flutter/lib/mobile/presentation/mobile_bottom_navigation_bar.dart

@@ -19,6 +19,7 @@ class MobileBottomNavigationBar extends StatelessWidget {
     final style = Theme.of(context);
 
     return Scaffold(
+      backgroundColor: Colors.red,
       body: navigationShell,
       bottomNavigationBar: BottomNavigationBar(
         showSelectedLabels: false,
@@ -43,14 +44,15 @@ class MobileBottomNavigationBar extends StatelessWidget {
               blendMode: null,
             ),
           ),
-          BottomNavigationBarItem(
-            label: 'search',
-            icon: const FlowySvg(FlowySvgs.m_search_lg),
-            activeIcon: FlowySvg(
-              FlowySvgs.m_search_lg,
-              color: style.colorScheme.primary,
-            ),
-          ),
+          // Enable this when search is ready.
+          // BottomNavigationBarItem(
+          //   label: 'search',
+          //   icon: const FlowySvg(FlowySvgs.m_search_lg),
+          //   activeIcon: FlowySvg(
+          //     FlowySvgs.m_search_lg,
+          //     color: style.colorScheme.primary,
+          //   ),
+          // ),
           BottomNavigationBarItem(
             label: 'notification',
             icon: const FlowySvg(FlowySvgs.m_notification_unselected_lg),