refactor(editor): rename doc to store on block components (#12173)

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

## Summary by CodeRabbit

- **Refactor**
  - Unified internal data access by replacing all references from `doc` to `store` across all components, blocks, widgets, and utilities. This affects how readonly state, block operations, and service retrieval are handled throughout the application.
- **Tests**
  - Updated all test utilities and test cases to use `store` instead of `doc` for document-related operations.
- **Chores**
  - Updated context providers and property names to reflect the change from `doc` to `store` for improved consistency and maintainability.

No user-facing features or behaviors have changed.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

blocksuite/affine/widgets/edgeless-auto-connect/src/index.ts

@@ -317,7 +317,7 @@ export class EdgelessAutoConnectWidget extends WidgetComponent<RootBlockModel> {
       })
     );
     this._disposables.add(
-      this.doc.slots.blockUpdated.subscribe(payload => {
+      this.store.slots.blockUpdated.subscribe(payload => {
         if (payload.flavour === 'affine:surface-ref') {
           switch (payload.type) {
             case 'add':
@@ -585,7 +585,7 @@ export class EdgelessAutoConnectWidget extends WidgetComponent<RootBlockModel> {
   }
 
   override render() {
-    const advancedVisibilityEnabled = this.doc
+    const advancedVisibilityEnabled = this.store
       .get(FeatureFlagService)
       .getFlag('enable_advanced_block_visibility');