fix: InputPrompt wrapped lines maintain highlighting, increase responsiveness in narrow cases (#7656)

Co-authored-by: Jacob Richman <jacob314@gmail.com>
Co-authored-by: Arya Gummadi <aryagummadi@google.com>

packages/cli/src/ui/components/Composer.test.tsx

@@ -50,6 +50,11 @@ vi.mock('./DetailedMessagesDisplay.js', () => ({
 
 vi.mock('./InputPrompt.js', () => ({
   InputPrompt: () => <Text>InputPrompt</Text>,
+  calculatePromptWidths: vi.fn(() => ({
+    inputWidth: 80,
+    suggestionsWidth: 40,
+    containerWidth: 84,
+  })),
 }));
 
 vi.mock('./Footer.js', () => ({