Modernize MaxSizedBox to use <Box maxHeight> and ResizeObservers (#16565)

packages/cli/src/gemini.tsx

@@ -67,7 +67,6 @@ import {
   type InitializationResult,
 } from './core/initializer.js';
 import { validateAuthMethod } from './config/auth.js';
-import { setMaxSizedBoxDebugging } from './ui/components/shared/MaxSizedBox.js';
 import { runZedIntegration } from './zed-integration/zedIntegration.js';
 import { cleanupExpiredSessions } from './utils/sessionCleanup.js';
 import { validateNonInteractiveAuth } from './validateNonInterActiveAuth.js';
@@ -562,7 +561,6 @@ export async function main() {
 
     await setupTerminalAndTheme(config, settings);
 
-    setMaxSizedBoxDebugging(isDebugMode);
     const initAppHandle = startupProfiler.start('initialize_app');
     const initializationResult = await initializeApp(config, settings);
     initAppHandle?.end();