fix: Resolve TypeScript build errors for verbatimModuleSyntax compatibility

- Fix EventEmitter import in page-contracts/store.ts (use default import)
- Add type declarations for eventemitter3 to fix ESM import type issue
- Add type declarations for react-copy-to-clipboard to fix React types mismatch

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

packages/react-components/src/react-copy-to-clipboard.d.ts

@@ -0,0 +1,23 @@
+// Copyright 2017-2026 @pezkuwi/react-components authors & contributors
+// SPDX-License-Identifier: Apache-2.0
+
+// Type override for react-copy-to-clipboard to fix React types compatibility
+declare module 'react-copy-to-clipboard' {
+  import * as React from 'react';
+
+  export interface Options {
+    debug?: boolean;
+    message?: string;
+    format?: string;
+  }
+
+  export interface Props {
+    children: React.ReactNode;
+    text: string;
+    onCopy?(text: string, result: boolean): void;
+    options?: Options;
+  }
+
+  declare const CopyToClipboard: React.FC<Props>;
+  export default CopyToClipboard;
+}