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/components/bookmark-card.ts

@@ -2,7 +2,7 @@ import { getEmbedCardIcons } from '@blocksuite/affine-block-embed';
 import { WebIcon16 } from '@blocksuite/affine-components/icons';
 import { ThemeProvider } from '@blocksuite/affine-shared/services';
 import { getHostName } from '@blocksuite/affine-shared/utils';
-import { WithDisposable } from '@blocksuite/global/lit';
+import { SignalWatcher, WithDisposable } from '@blocksuite/global/lit';
 import { OpenInNewIcon } from '@blocksuite/icons/lit';
 import { BlockSelection, ShadowlessElement } from '@blocksuite/std';
 import { html } from 'lit';
@@ -12,7 +12,9 @@ import { classMap } from 'lit/directives/class-map.js';
 import type { BookmarkBlockComponent } from '../bookmark-block.js';
 import { styles } from '../styles.js';
 
-export class BookmarkCard extends WithDisposable(ShadowlessElement) {
+export class BookmarkCard extends SignalWatcher(
+  WithDisposable(ShadowlessElement)
+) {
   static override styles = styles;
 
   private _handleClick(event: MouseEvent) {
@@ -125,11 +127,11 @@ export class BookmarkCard extends WithDisposable(ShadowlessElement) {
           <div class="affine-bookmark-content-description">
             ${descriptionText}
           </div>
-          <div
-            class="affine-bookmark-content-url-wrapper"
-            @click=${this.bookmark.open}
-          >
-            <div class="affine-bookmark-content-url">
+          <div class="affine-bookmark-content-url-wrapper">
+            <div
+              class="affine-bookmark-content-url"
+              @click=${this.bookmark.open}
+            >
               <span>${getHostName(url)}</span>
               <div class="affine-bookmark-content-url-icon">
                 ${OpenInNewIcon({ width: '12', height: '12' })}

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;