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-figma-block/configs/slash-menu.ts

@@ -22,7 +22,7 @@ export const embedFigmaSlashMenuConfig: SlashMenuConfig = {
       action: ({ std, model }) => {
         (async () => {
           const { host } = std;
-          const parentModel = host.doc.getParent(model);
+          const parentModel = host.store.getParent(model);
           if (!parentModel) {
             return;
           }

blocksuite/affine/blocks/embed/src/embed-figma-block/embed-figma-block.ts

@@ -49,8 +49,8 @@ export class EmbedFigmaBlockComponent extends EmbedBlockComponent<EmbedFigmaMode
     this._cardStyle = this.model.props.style;
 
     if (!this.model.props.title) {
-      this.doc.withoutTransact(() => {
-        this.doc.updateBlock(this.model, {
+      this.store.withoutTransact(() => {
+        this.store.updateBlock(this.model, {
           title: 'Figma',
         });
       });