chore(editor): improve bookmark UI&UX (#11525)

Close [BS-2804](https://linear.app/affine-design/issue/BS-2804/[ui-bug]-link-card-view-ui-布局错了，url-应该是-text-secondary-color)
Close [BS-3034](https://linear.app/affine-design/issue/BS-3034/link-card-view-链接需要-fix-在底部)

### What Changes
- remove url selected color
- improve url click area by moving `@click` callback to inner small url container
- improve layout

blocksuite/affine/blocks/bookmark/src/styles.ts

@@ -26,7 +26,6 @@ export const styles = css`
 
   .affine-bookmark-content {
     width: calc(100% - 204px);
-    height: 100%;
     display: flex;
     flex-direction: column;
     align-self: stretch;