fix: add restoreAllMocks in test code

Author: sukyeong

packages/mobile/src/index.ts

@@ -1,2 +1,3 @@
 // Utils
 export { isServer } from './utils/isServer.ts';
+export { getKeyboardHeight } from './utils/keyboardHeight/getKeyboardHeight.ts';

packages/mobile/src/utils/keyboardHeight/getKeyboardHeight.test.ts

@@ -6,6 +6,7 @@ describe('getKeyboardHeight', () => {
   const originalVisualViewport = window.visualViewport;
 
   afterEach(() => {
+    vi.restoreAllMocks();
     Object.defineProperty(window, 'visualViewport', {
       value: originalVisualViewport,
       writable: true,

packages/mobile/src/utils/keyboardHeight/getKeyboardHeight.ts

@@ -1,3 +1,5 @@
+import { isServer } from '../isServer.ts';
+
 /**
  * Returns the current on-screen keyboard height in pixels.
  *
@@ -24,6 +26,10 @@
  * ```
  */
 export function getKeyboardHeight(): number {
+  if (isServer()) {
+    return 0;
+  }
+
   const visualViewport = window.visualViewport;
   if (visualViewport == null) {
     // Defensive guard; not expected to run in supported environments