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/page-dragging-area/src/utils.ts

@@ -118,7 +118,7 @@ export function getSelectingBlockPaths(
   // eslint-disable-next-line @typescript-eslint/prefer-for-of
   for (let i = 0; i < blocks.length; i++) {
     const block = blocks[i];
-    const parent = blocks[i].element.doc.getParent(block.element.model);
+    const parent = blocks[i].element.store.getParent(block.element.model);
     const parentId = parent?.id;
     if (parentId) {
       const isParentInBlocks = blocks.some(