fix(web): 补全缺失的 web shims 并修复渲染崩溃问题

- 新增 sentry-react-native、react-native-video、react-native-static-server、expo-network、expo-intent-launcher、expo-clipboard、expo-file-system 的 web shim
- 重写 react-native-pager-view shim，通过 useImperativeHandle 暴露 setPage 方法
- 修复 sentry-react-native shim 缺少 ErrorBoundary 导致的渲染崩溃
- 在 _layout.tsx 中加载 Ionicons 字体，修复 web 端字体 404
- 更新 metro.config.js 中 sentry shim 路径为 .tsx

shims/sentry-react-native.web.tsx

@@ -0,0 +1,30 @@
+/** Web shim for @sentry/react-native - no-op stubs for web platform */
+import React from 'react';
+
+export const init = (_options?: unknown) => {};
+export const wrap = <T>(component: T): T => component;
+export const captureException = (_error: unknown, _hint?: unknown) => '';
+export const captureMessage = (_message: string, _level?: unknown) => '';
+export const setUser = (_user: unknown) => {};
+export const setTag = (_key: string, _value: unknown) => {};
+export const setExtra = (_key: string, _extra: unknown) => {};
+export const addBreadcrumb = (_breadcrumb: unknown) => {};
+export const configureScope = (_callback: unknown) => {};
+export const withScope = (_callback: unknown) => {};
+export const getCurrentHub = () => ({ getClient: () => undefined });
+export const ReactNativeTracing = class {};
+export const ReactNavigationInstrumentation = class {};
+export const TouchEventBoundary = ({ children }: { children: React.ReactNode }) => children;
+
+export class ErrorBoundary extends React.Component<
+  { fallback: React.ReactNode; children: React.ReactNode },
+  { hasError: boolean }
+> {
+  state = { hasError: false };
+  static getDerivedStateFromError() { return { hasError: true }; }
+  render() {
+    return this.state.hasError ? this.props.fallback : this.props.children;
+  }
+}
+
+export default { init, wrap, captureException, captureMessage, setUser, setTag, setExtra };