fix(chat): simplify Xiaomi Facebook keyboard lift

src/hooks/use-keyboard-height/environment.ts

@@ -1,7 +1,6 @@
 import { BrowserDetector, PlatformDetector } from "@/utils";
 
 import type { KeyboardAdaptEnvironment } from "./types";
-import { getVirtualKeyboard } from "./virtual-keyboard";
 
 export function getKeyboardAdaptEnvironment(
   ua: string | null = null,
@@ -28,7 +27,6 @@ export function getKeyboardAdaptEnvironment(
     isFacebookInAppBrowser,
     hasVisualViewport:
       typeof window !== "undefined" && window.visualViewport != null,
-    hasVirtualKeyboard: getVirtualKeyboard() != null,
     usesXiaomiFacebookFallback:
       platform.isAndroid && isXiaomiFamilyDevice && isFacebookInAppBrowser,
   };
@@ -39,9 +37,3 @@ export function shouldEnableKeyboardAdaptation(
 ): boolean {
   return environment.usesXiaomiFacebookFallback;
 }
-
-export function shouldUseInAppKeyboardFallback(): boolean {
-  if (typeof navigator === "undefined") return false;
-  return getKeyboardAdaptEnvironment(navigator.userAgent)
-    .usesXiaomiFacebookFallback;
-}