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/embed/src/embed-iframe-block/embed-iframe-block.ts

@@ -177,7 +177,7 @@ export class EmbedIframeBlockComponent extends CaptionedBlockComponent<EmbedIfra
 
       // update model
       const iframeUrl = this._getIframeUrl(embedData) ?? currentIframeUrl;
-      this.doc.updateBlock(this.model, {
+      this.store.updateBlock(this.model, {
         iframeUrl,
         title: embedData?.title || previewData?.title,
         description: embedData?.description || previewData?.description,
@@ -373,7 +373,7 @@ export class EmbedIframeBlockComponent extends CaptionedBlockComponent<EmbedIfra
 
     // if the iframe url is not set, refresh the data to get the iframe url
     if (!this.model.props.iframeUrl) {
-      this.doc.withoutTransact(() => {
+      this.store.withoutTransact(() => {
         this.refreshData().catch(console.error);
       });
     } else {
@@ -452,7 +452,7 @@ export class EmbedIframeBlockComponent extends CaptionedBlockComponent<EmbedIfra
   };
 
   get readonly() {
-    return this.doc.readonly;
+    return this.store.readonly;
   }
 
   get selectionManager() {