Fix React import to work with esModuleInterop: false

Changes React imports from default import syntax to namespace import
syntax in RSCRoute.tsx and RSCProvider.tsx. This fixes TypeScript
compilation errors when esModuleInterop is set to false in tsconfig.

Before: import React, { ... } from 'react'
After: import * as React from 'react'

This is required because @types/react uses 'export =' syntax, which
can only be default-imported when esModuleInterop is enabled.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <[email protected]>

Author: justin808

packages/react-on-rails-pro/src/RSCProvider.tsx

@@ -14,7 +14,8 @@
 
 'use client';
 
-import React, { createContext, useContext, type ReactNode } from 'react';
+import * as React from 'react';
+import { createContext, useContext, type ReactNode } from 'react';
 import type { ClientGetReactServerComponentProps } from './getReactServerComponent.client.ts';
 import { createRSCPayloadKey } from './utils.ts';
 

packages/react-on-rails-pro/src/RSCRoute.tsx

@@ -16,7 +16,8 @@
 
 'use client';
 
-import React, { Component, use, type ReactNode } from 'react';
+import * as React from 'react';
+import { Component, use, type ReactNode } from 'react';
 import { useRSC } from './RSCProvider.tsx';
 import { ServerComponentFetchError } from './ServerComponentFetchError.ts';