Resolve copilot comments

Author: anupriya13

packages/@react-native-windows/cli/src/utils/architecturePrompt.ts

@@ -48,23 +48,28 @@ export async function promptForArchitectureChoice(
     try {
       let timeoutId: NodeJS.Timeout | undefined;
 
-      const userInputPromise = prompts(
-        {
-          type: 'text',
-          name: 'choice',
-          message:
-            'Would you like to continue using the Old Architecture? (Y/N)',
-          validate: (value: string) => {
-            const normalized = value.trim().toLowerCase();
-            return normalized === 'y' || normalized === 'n'
-              ? true
-              : "Invalid input. Please enter 'Y' for Yes or 'N' for No.";
-          },
-        },
-        {
-          onCancel: () => {
-            throw new Error('User cancelled');
-          },
+      // Wrap prompts in a cancelable promise
+      const userInputPromise = new Promise<{choice?: string}>(
+        (resolve, reject) => {
+          prompts(
+            {
+              type: 'text',
+              name: 'choice',
+              message:
+                'Would you like to continue using the Old Architecture? (Y/N)',
+              validate: (value: string) => {
+                const normalized = value.trim().toLowerCase();
+                return normalized === 'y' || normalized === 'n'
+                  ? true
+                  : "Invalid input. Please enter 'Y' for Yes or 'N' for No.";
+              },
+            },
+            {
+              onCancel: () => reject(new Error('User cancelled')),
+            },
+          )
+            .then(resolve)
+            .catch(reject);
         },
       );
 
@@ -82,7 +87,8 @@ export async function promptForArchitectureChoice(
 
       const response = await Promise.race([userInputPromise, timeoutPromise]);
 
-      if (timeoutId) clearTimeout(timeoutId); // prevent late logging after resolution
+      // ensures timeout callback never runs after user input
+      if (timeoutId) clearTimeout(timeoutId);
 
       if (!response.choice) {
         // User cancelled or no input