fix: Specify React version as 17 (#6)

Author: Dhaiwat10

create-app.ts

@@ -94,7 +94,7 @@ export async function createApp({
   /**
    * Default dependencies.
    */
-  const dependencies = ['react', 'react-dom', 'next', 'wagmi', 'ethers'];
+  const dependencies = ['react@17.0.0', 'react-dom@17.0.0', 'next', 'wagmi', 'ethers'];
   /**
    * Default devDependencies.
    */