refactor(editor): simplify worker renderer message and canvas transfer (#10199)

- Fixed frame delay on panning.
- Removed redundant worker message.
- Removed redundant offscreen bitmap transfer.
- Refactored logic using a clearer `refresh` method entry.
- Extracted plain utils.

blocksuite/presets/src/__tests__/utils/renderer-entry.ts

@@ -5,7 +5,7 @@ import { setupEditor } from './setup.js';
 
 async function init() {
   setupEditor('edgeless', [ViewportTurboRendererExtension]);
-  addSampleNotes(doc, 6);
+  addSampleNotes(doc, 1);
   doc.load();
 }