feat: support cross-space page mentions (#1979)

apps/client/src/features/editor/components/common/editor-paste-handler.tsx

@@ -33,7 +33,6 @@ export const handlePaste = (
     const url = clipboardData.trim();
     const { from: pos, empty } = editor.state.selection;
     const match = INTERNAL_LINK_REGEX.exec(url);
-    const currentPageMatch = INTERNAL_LINK_REGEX.exec(window.location.href);
 
     // pasted link must be from the same workspace/domain and must not be on a selection
     if (!empty || match[2] !== window.location.host) {
@@ -41,12 +40,6 @@ export const handlePaste = (
       return false;
     }
 
-    // for now, we only support internal links from the same space
-    // compare space name
-    if (currentPageMatch[4].toLowerCase() !== match[4].toLowerCase()) {
-      return false;
-    }
-
     const anchorId = match[6] ? match[6].split("#")[0] : undefined;
     const urlWithoutAnchor = anchorId
       ? url.substring(0, url.indexOf("#"))