fix: resolve TS build errors in EditorPanel and context menu

- Return empty fragment instead of null to satisfy JSX.Element return type
- Remove unused paneTransportsRef parameter and PtyTransport import

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/renderer/src/components/terminal-pane/use-terminal-pane-context-menu.ts

@@ -1,5 +1,7 @@
 import { useEffect, useRef, useState } from 'react'
 import type { ManagedPane, PaneManager } from '@/lib/pane-manager/pane-manager'
+
+
 const CLOSE_ALL_CONTEXT_MENUS_EVENT = 'orca-close-all-context-menus'
 
 type UseTerminalPaneContextMenuDeps = {