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/linked-doc/src/config.ts

@@ -78,7 +78,7 @@ export function createLinkedDocMenuGroup(
   editorHost: EditorHost,
   inlineEditor: AffineInlineEditor
 ) {
-  const doc = editorHost.doc;
+  const doc = editorHost.store;
   const { docMetas } = doc.workspace.meta;
   const filteredDocList = docMetas
     .filter(({ id }) => id !== doc.id)
@@ -122,7 +122,7 @@ export function createNewDocMenuGroup(
   editorHost: EditorHost,
   inlineEditor: AffineInlineEditor
 ): LinkedMenuGroup {
-  const doc = editorHost.doc;
+  const doc = editorHost.store;
   const docName = query || DEFAULT_DOC_NAME;
   const displayDocName =
     docName.slice(0, DISPLAY_NAME_LENGTH) +

blocksuite/affine/widgets/linked-doc/src/widget.ts

@@ -307,7 +307,7 @@ export class AffineLinkedDocWidget extends WidgetComponent<RootBlockModel> {
 
     this._updateInputRects();
 
-    const enableMobile = this.doc
+    const enableMobile = this.store
       .get(FeatureFlagService)
       .getFlag('enable_mobile_linked_doc_menu');
     this._mode$.value = enableMobile ? mode : 'desktop';