test(chat): enable virtual keyboard overlay experiment

src/app/chat/hooks/use-chat-keyboard-diagnostics.ts

@@ -8,6 +8,7 @@ import { PlatformDetector } from "@/utils/platform-detect";
 const CHAT_KEYBOARD_DEBUG_PARAM = "keyboard_debug";
 
 interface VirtualKeyboardLike extends EventTarget {
+  readonly overlaysContent?: boolean;
   readonly boundingRect?: Pick<
     DOMRectReadOnly,
     "height" | "width" | "x" | "y"
@@ -31,6 +32,7 @@ export interface ChatKeyboardDebugSnapshot {
   visualOffsetLeft: number | null;
   visualScale: number | null;
   virtualKeyboardSupported: boolean;
+  virtualKeyboardOverlaysContent: boolean | null;
   virtualKeyboardRect: {
     x: number;
     y: number;
@@ -170,6 +172,8 @@ function createChatKeyboardDebugSnapshot(
     visualOffsetLeft: visualViewport?.offsetLeft ?? null,
     visualScale: visualViewport?.scale ?? null,
     virtualKeyboardSupported: getVirtualKeyboard() != null,
+    virtualKeyboardOverlaysContent:
+      getVirtualKeyboard()?.overlaysContent ?? null,
     virtualKeyboardRect: virtualKeyboardRect
       ? {
           x: virtualKeyboardRect.x,