chore(editor): revert padding and layout of code block toolbar (#9562)

Close [BS-1767](https://linear.app/affine-design/issue/BS-1767/code-block调整边距)

This PR reverts padding and layout of code block toolbar.

![CleanShot 2025-01-07 at 12.39.37@2x.png](https://graphite-user-uploaded-assets-prod.s3.amazonaws.com/MyRfgiN4RuBxJfrza3SG/7f278d03-40c4-4592-a844-77a5179149fd.png)

blocksuite/affine/block-code/src/code-block.ts

@@ -16,7 +16,7 @@ import {
   getInlineRangeProvider,
   TextSelection,
 } from '@blocksuite/block-std';
-import { IS_MAC } from '@blocksuite/global/env';
+import { IS_MAC, IS_MOBILE } from '@blocksuite/global/env';
 import { noop } from '@blocksuite/global/utils';
 import {
   INLINE_ROOT_ATTR,
@@ -389,6 +389,7 @@ export class CodeBlockComponent extends CaptionedBlockComponent<
       <div
         class=${classMap({
           'affine-code-block-container': true,
+          mobile: IS_MOBILE,
           wrap: this.model.wrap,
         })}
       >