refactor: add docsService for blocksuite to change and observe doc mode (#7200)

This PR provide `DocModeService` to manage document mode, which is used by blocksuite.

### What Changed?
- Add document mode apis from `DocService` and `DocsService`
- Remove useless `pageService.getEditorMode` and `pageService.slots.editorModeSwitch` api

[Related PR in blocksuite](https://github.com/toeverything/blocksuite/pull/7288)

[Bump Blocksuite](https://github.com/toeverything/AFFiNE/pull/7209)
> ## Features
> * [feat(presets): support different tracker control for actions blocksuite#7285](https://github.com/toeverything/blocksuite/pull/7285) @donteatfriedrice
> * [feat(edgeless): add default color and editing border for edgeless text blocksuite#7278](https://github.com/toeverything/blocksuite/pull/7278) @Flrande
> * [feat(blocks): center peek entries blocksuite#7275](https://github.com/toeverything/blocksuite/pull/7275) @pengx17
>
> ## Bugfix
> * [fix(blocks): affine-embed-synced-doc-block peek on dblclick blocksuite#7284](https://github.com/toeverything/blocksuite/pull/7284) @pengx17
> * [fix(edgeless): edgeless text rect should automatically update when changing font blocksuite#7292](https://github.com/toeverything/blocksuite/pull/7292) @Flrande
> * [fix(edgeless): align panel not work blocksuite#7293](https://github.com/toeverything/blocksuite/pull/7293) @Flrande
> * [fix(blocks): filterable list unexpected hover style blocksuite#7291](https://github.com/toeverything/blocksuite/pull/7291) @golok727
> * [fix(blocks): slash menu unexpected hover style blocksuite#7290](https://github.com/toeverything/blocksuite/pull/7290) @golok727
> * [fix(blocks): bookmark block error on undo or delete while loading blocksuite#7276](https://github.com/toeverything/blocksuite/pull/7276) @golok727
> * [fix(presets): chat input max-height blocksuite#7283](https://github.com/toeverything/blocksuite/pull/7283) @fundon
> * [fix(presets): get image blob from selection blocksuite#7286](https://github.com/toeverything/blocksuite/pull/7286) @donteatfriedrice
> * [fix(blocks): connectors resize and rotate blocksuite#7256](https://github.com/toeverything/blocksuite/pull/7256) @fundon
>
> ## Refactor
> * [refactor: add DocModeService for doc mode get, set, toogle and observe change blocksuite#7288](https://github.com/toeverything/blocksuite/pull/7288) @akumatus
> * [refactor(edgeless): rewrite auto-connect component as a widget blocksuite#7287](https://github.com/toeverything/blocksuite/pull/7287) @doouding
>
> ## Misc
> * [test: fix flaky blocksuite#7295](https://github.com/toeverything/blocksuite/pull/7295) @L-Sun
> * [style(page): adjust heading font-weight and letter-spacing blocksuite#7277](https://github.com/toeverything/blocksuite/pull/7277) @CatsJuice
> * [chore: apply member ordering rule blocksuite#7279](https://github.com/toeverything/blocksuite/pull/7279) @Saul-Mirone

---

packages/frontend/core/src/pages/workspace/detail-page/detail-page.tsx

@@ -186,8 +186,6 @@ const DetailPageImpl = memo(function DetailPageImpl() {
         editorHost.std.spec.getService<PageRootService>('affine:page');
       const disposable = new DisposableGroup();
 
-      pageService.getEditorMode = (pageId: string) =>
-        docRecordList.doc$(pageId).value?.mode$.value ?? 'page';
       pageService.getDocUpdatedAt = (pageId: string) => {
         const linkedPage = docRecordList.doc$(pageId).value;
         if (!linkedPage) return new Date();
@@ -210,11 +208,6 @@ const DetailPageImpl = memo(function DetailPageImpl() {
           jumpToTag(workspace.id, tagId);
         })
       );
-      disposable.add(
-        pageService.slots.editorModeSwitch.on(mode => {
-          doc.setMode(mode);
-        })
-      );
 
       setEditor(editor);