feat(editor): improve select perf (#15353)

maybe fix #12675


#### PR Dependency Tree


* **PR #15353** 👈

This tree was auto-generated by
[Charcoal](https://github.com/danerwilliams/charcoal)

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

## Summary by CodeRabbit

- **Bug Fixes**
- Improved block selection updates so selected states refresh reliably.
  - Corrected selected-block ordering and duplicate handling.
- Improved toolbar positioning accuracy and reduced unnecessary layout
recalculations.
  - Adjusted toolbar animation behavior for surface-based tools.

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

blocksuite/affine/widgets/toolbar/src/toolbar.ts

@@ -146,7 +146,16 @@ export class AffineToolbarWidget extends WidgetComponent {
   }
 
   setReferenceElementWithBlocks(blocks: BlockComponent[]) {
-    const getClientRects = () => blocks.map(e => e.getBoundingClientRect());
+    let cachedClientRects: DOMRect[] | null = null;
+    const getClientRects = () => {
+      if (!cachedClientRects) {
+        cachedClientRects = blocks.map(e => e.getBoundingClientRect());
+        requestAnimationFrame(() => {
+          cachedClientRects = null;
+        });
+      }
+      return cachedClientRects;
+    };
 
     this.referenceElement$.value = blocks.length
       ? () => ({

blocksuite/affine/widgets/toolbar/src/utils.ts

@@ -56,7 +56,7 @@ export function autoUpdatePosition(
   flavour: string,
   placement: ToolbarPlacement,
   sideOptions: Partial<SideObject> | null,
-  options: AutoUpdateOptions = { elementResize: false, animationFrame: true }
+  options: AutoUpdateOptions = { elementResize: false }
 ) {
   const isInline = flavour === 'affine:note';
   const hasSurfaceScope = flavour.includes('surface');
@@ -147,7 +147,7 @@ export function autoUpdatePosition(
     () => {
       update().catch(console.error);
     },
-    options
+    { animationFrame: hasSurfaceScope, ...options }
   );
 }