fix(editor): auto focus between tab switch (#12572)

Closes: BS-2290

<!-- This is an auto-generated comment: release notes by coderabbit.ai -->
## Summary by CodeRabbit

## Summary by CodeRabbit

- **Bug Fixes**
  - Improved focus behavior when switching between tabs to prevent unwanted automatic focusing of the content-editable area.
  - Enhanced selection clearing to avoid unnecessary blurring when the main editable element is already focused.
  - Refined focus checks in tests to specifically target contenteditable elements, ensuring more accurate validation of focus behavior.
  - Adjusted test assertions for block selection to be less strict and removed redundant blur operations for smoother test execution.
  - Updated toolbar dropdown closing method to use keyboard interaction for better reliability.
- **New Features**
  - Added a recoverable property to selection types, improving selection state management and recovery.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

blocksuite/framework/std/src/selection/surface.ts

@@ -13,6 +13,8 @@ export class SurfaceSelection extends BaseSelection {
 
   static override type = 'surface';
 
+  static override recoverable = true;
+
   readonly editing: boolean;
 
   readonly elements: string[];

blocksuite/framework/std/src/selection/text.ts

@@ -36,6 +36,8 @@ export class TextSelection extends BaseSelection {
 
   static override type = 'text';
 
+  static override recoverable = true;
+
   from: TextRangePoint;
 
   reverse: boolean;