refactor: update keyboard shortcut for new query tab from Cmd+T/Ctrl+T to Cmd+N/Ctrl+N

Author: Krishnachaitanyakc

src/renderer/components/ActiveConnectionLayout/ActiveConnectionLayout.tsx

@@ -33,23 +33,6 @@ export function ActiveConnectionLayout({
     checkReadOnly()
   }, [connectionId])
 
-  // Global keyboard shortcut for Cmd+T / Ctrl+T
-  useEffect(() => {
-    const handleKeyDown = (event: KeyboardEvent) => {
-      if ((event.metaKey || event.ctrlKey) && event.key === 't') {
-        event.preventDefault()
-        if (newTabHandlerRef.current) {
-          newTabHandlerRef.current()
-        }
-      }
-    }
-
-    document.addEventListener('keydown', handleKeyDown)
-    return () => {
-      document.removeEventListener('keydown', handleKeyDown)
-    }
-  }, [])
-
   const handleOpenTableTab = (database: string, tableName: string) => {
     if (window.openTableTab) {
       window.openTableTab(database, tableName)