execute command disabled, when query has not connection

packages/web/src/tabs/QueryTab.svelte

@@ -27,6 +27,7 @@
     execute: true,
     toggleComment: true,
     findReplace: true,
+    executeAdditionalCondition: () => getCurrentEditor()?.hasConnection(),
   });
 </script>
 
@@ -121,6 +122,10 @@
     return tabid;
   }
 
+  export function hasConnection() {
+    return !!conid;
+  }
+
   export async function execute() {
     if (busy) return;
     executeNumber++;