fix: connector issues (#12308)

Fixes [BS-3161](https://linear.app/affine-design/issue/BS-3161/发现已连接的connector会响应对齐线)
Fixes [BS-3337](https://linear.app/affine-design/issue/BS-3337/connector你肿么了)
Fixes [BS-3334](https://linear.app/affine-design/issue/BS-3334/connector-不应该能够被拖拽)

<!-- This is an auto-generated comment: release notes by coderabbit.ai -->

## Summary by CodeRabbit

- **Bug Fixes**
	- Corrected typos related to label editing state, ensuring more reliable label editing and display for connectors.
	- Fixed logic in the auto-complete overlay, improving when overlays appear during hover actions.

- **New Features**
	- Improved connector label handling by ensuring label state is preserved and restored during editing.
	- Enhanced connector movement behavior, allowing connectors to be moved only when appropriate elements are selected.

- **Tests**
	- Added end-to-end tests to verify connector movement and selection behaviors for improved reliability.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

blocksuite/affine/gfx/connector/src/element-transform/connector-filter.ts

@@ -36,6 +36,8 @@ export class ConnectorFilter extends InteractivityExtension {
         elements.sort((a, _) => (a instanceof ConnectorElementModel ? -1 : 1));
       }
 
+      context.elements = elements;
+
       return {};
     });
   }

blocksuite/affine/gfx/connector/src/text/edgeless-connector-label-editor.ts

@@ -188,6 +188,8 @@ export class EdgelessConnectorLabelEditor extends WithDisposable(
     });
     this._resizeObserver.observe(this.richText);
 
+    this.connector.stash('labelXYWH');
+
     this.updateComplete
       .then(() => {
         if (!this.inlineEditor) return;
@@ -257,7 +259,8 @@ export class EdgelessConnectorLabelEditor extends WithDisposable(
             }
           }
 
-          connector.lableEditing = false;
+          connector.labelEditing = false;
+          connector.pop('labelXYWH');
 
           selection.set({
             elements: [],
@@ -293,7 +296,7 @@ export class EdgelessConnectorLabelEditor extends WithDisposable(
           }
         );
 
-        connector.lableEditing = true;
+        connector.labelEditing = true;
       })
       .catch(console.error);
   }