fix(mobile): drop the unused useLayoutEffect import that fails lint on main (#25575)

Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>

Author: juliusmarminge

apps/mobile/src/features/threads/ThreadComposer.tsx

@@ -28,14 +28,7 @@ import {
 } from "@t3tools/shared/usageLimits";
 import { StackActions, useFocusEffect, useNavigation } from "@react-navigation/native";
 import type { ReactNode } from "react";
-import {
-  useEffect,
-  useEffectEvent,
-  useLayoutEffect,
-  useRef,
-  useState,
-  type RefObject,
-} from "react";
+import { useEffect, useEffectEvent, useRef, useState, type RefObject } from "react";
 import { Keyboard, Platform, View, type ViewStyle } from "react-native";
 import { composerImageGallery } from "../../lib/composerImageGallery";
 import { filePreviewGallery } from "../../lib/filePreviewGallery";