refactor: moving connector label to connector view (#11738)

### Changed
Moved connector label moving logic from `default-tool` to connector view.

#### Other infrastructure changes:​​
- Gfx element view now can handles drag events
- Added `context.preventDefault()` support to bypass built-in interactions in extension
- Handle the pointer events in element view will bypass the built-in interactions automatically

> The built-in interactions include element dragging, click selection, drag-to-scale operations, etc.

blocksuite/affine/gfx/shape/src/view.ts

@@ -1,4 +1,4 @@
-import type { ShapeElementModel } from '@blocksuite/affine-model';
+import { ShapeElementModel } from '@blocksuite/affine-model';
 import { GfxElementModelView } from '@blocksuite/std/gfx';
 
 import { mountShapeTextEditor } from './text/edgeless-shape-text-editor';
@@ -16,7 +16,11 @@ export class ShapeElementView extends GfxElementModelView<ShapeElementModel> {
     this.on('dblclick', () => {
       const edgeless = this.std.view.getBlock(this.std.store.root!.id);
 
-      if (edgeless && !this.model.isLocked()) {
+      if (
+        edgeless &&
+        !this.model.isLocked() &&
+        this.model instanceof ShapeElementModel
+      ) {
         mountShapeTextEditor(this.model, edgeless);
       }
     });