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/blocks/code/src/code-toolbar/components/lang-button.ts

@@ -49,7 +49,7 @@ export class LanguageListButton extends WithDisposable(
   private _abortController?: AbortController;
 
   private readonly _clickLangBtn = () => {
-    if (this.blockComponent.doc.readonly) return;
+    if (this.blockComponent.store.readonly) return;
     if (this._abortController) {
       // Close the language list if it's already opened.
       this._abortController.abort();
@@ -71,7 +71,7 @@ export class LanguageListButton extends WithDisposable(
           sortedBundledLanguages.splice(index, 1);
           sortedBundledLanguages.unshift(item);
         }
-        this.blockComponent.doc.transact(() => {
+        this.blockComponent.store.transact(() => {
           this.blockComponent.model.props.language$.value = item.name;
         });
       },
@@ -134,10 +134,10 @@ export class LanguageListButton extends WithDisposable(
       </div>`}
       height="24px"
       @click=${this._clickLangBtn}
-      ?disabled=${this.blockComponent.doc.readonly}
+      ?disabled=${this.blockComponent.store.readonly}
     >
       <span class="lang-button-icon" slot="suffix">
-        ${!this.blockComponent.doc.readonly ? ArrowDownIcon : nothing}
+        ${!this.blockComponent.store.readonly ? ArrowDownIcon : nothing}
       </span>
     </icon-button> `;
   }

blocksuite/affine/blocks/code/src/code-toolbar/components/preview-button.ts

@@ -50,9 +50,9 @@ export class PreviewButton extends WithDisposable(SignalWatcher(LitElement)) {
   `;
 
   private readonly _toggle = (value: boolean) => {
-    if (this.blockComponent.doc.readonly) return;
+    if (this.blockComponent.store.readonly) return;
 
-    this.blockComponent.doc.updateBlock(this.blockComponent.model, {
+    this.blockComponent.store.updateBlock(this.blockComponent.model, {
       preview: value,
     });
   };

blocksuite/affine/blocks/code/src/code-toolbar/context.ts

@@ -8,7 +8,7 @@ export class CodeBlockToolbarContext extends MenuContext {
   };
 
   get doc() {
-    return this.blockComponent.doc;
+    return this.blockComponent.store;
   }
 
   get host() {