fix: sidebar regression (#2195)

packages/component/src/components/app-sidebar/index.css.ts

@@ -13,7 +13,7 @@ export const navStyle = style({
   height: '100%',
   display: 'flex',
   flexDirection: 'column',
-  transition: 'margin-left .3s',
+  transition: 'margin-left .3s, width .3s',
   zIndex: parseInt(baseTheme.zIndexModal),
   borderRight: '1px solid var(--affine-border-color)',
   '@media': {
@@ -61,6 +61,7 @@ export const navHeaderStyle = style({
   },
   selectors: {
     '&[data-is-macos-electron="true"]': {
+      WebkitAppRegion: 'drag',
       justifyContent: 'flex-end',
     },
   },