fix(core): text-renderer should be readonly (#9244)

fix AF-2010, AF-2009

packages/frontend/core/src/components/blocksuite/block-suite-editor/bi-directional-link-panel.css.ts

@@ -98,6 +98,7 @@ export const linkPreviewContainer = style({
 });
 
 export const linkPreview = style({
+  cursor: 'default',
   border: `0.5px solid ${cssVarV2('backlinks/blockBorder')}`,
   borderRadius: '8px',
   padding: '8px',
@@ -111,6 +112,10 @@ export const linkPreview = style({
   },
 });
 
+globalStyle(`${linkPreview} *`, {
+  cursor: 'default',
+});
+
 export const linkPreviewRenderer = style({
   cursor: 'pointer',
 });