Focus the editor when link dialog is closed.

This is especially useful when the ESC key is hit. Without this, the
link dialog disappears, you expect to be able to continue editing, but
the editor does not have focus. Now it does!

src/exports/elements/tip-tap-editor.ts

@@ -303,6 +303,7 @@ export class TipTapEditor extends TipTapEditorBase {
 
   closeLinkDialog(): void {
     this.linkDialogExpanded = false;
+    this.editor.commands.focus();
   }
 
   showLinkDialog(): void {