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/note/src/commands/block-type.ts

@@ -68,7 +68,7 @@ export const updateBlockType: Command<
 
   const blockModels = selectedBlocks.map(ele => ele.model);
 
-  const hasSameDoc = selectedBlocks.every(block => block.doc === doc);
+  const hasSameDoc = selectedBlocks.every(block => block.store === doc);
   if (!hasSameDoc) {
     // doc check
     console.error(

blocksuite/affine/blocks/note/src/components/edgeless-note-background.ts

@@ -66,7 +66,7 @@ export class EdgelessNoteBackground extends SignalWatcher(
   }
 
   get doc() {
-    return this.std.host.doc;
+    return this.std.host.store;
   }
 
   private _tryAddParagraph(x: number, y: number) {
@@ -137,7 +137,7 @@ export class EdgelessNoteBackground extends SignalWatcher(
     const y = clamp(e.y, rect.top + offsetY, rect.bottom - offsetY);
     handleNativeRangeAtPoint(x, y);
 
-    if (this.std.host.doc.readonly) return;
+    if (this.std.host.store.readonly) return;
 
     this._tryAddParagraph(x, y);
   }

blocksuite/affine/blocks/note/src/note-edgeless-block.ts

@@ -298,7 +298,7 @@ export class EdgelessNoteBlockComponent extends toGfxBlockComponent(
               .note=${this.model}
             ></edgeless-page-block-title>
             <div
-              contenteditable=${String(!this.doc.readonly$.value)}
+              contenteditable=${String(!this.store.readonly$.value)}
               class="edgeless-note-page-content"
             >
               ${this.renderPageContent()}
@@ -362,7 +362,7 @@ export class EdgelessNoteBlockComponent extends toGfxBlockComponent(
           }
 
           if (this.model.children.length === 0) {
-            const blockId = this.doc.addBlock(
+            const blockId = this.store.addBlock(
               'affine:paragraph',
               { type: 'text' },
               this.model.id