fix: connector should remain the same when its target or source switch to other

shape type (#11369)

Fixes [BS-1431](https://linear.app/affine-design/issue/BS-1431/改变-shape-形状后，connector-丢失)

blocksuite/affine/gfx/shape/src/toolbar/config.ts

@@ -141,7 +141,7 @@ export const shapeToolbarConfig = {
 
         return renderMenu({
           icon: ShapeIcon(),
-          label: 'Switch type',
+          label: 'Switch shape type',
           items: ShapeComponentConfig.map(item => ({
             key: item.tooltip,
             value: item.name,