Fix starknet react defaultChainId (#58)

Author: broody

src/pages/controller/configuration.md

@@ -17,7 +17,7 @@ export type Chain = {
 export type ControllerOptions = {
     // Chain configuration
     chains?: Chain[];  // Custom RPC endpoints for slot katana instances
-    chainId?: string;  // hex encoded
+    defaultChainId?: string;  // Default chain to use (hex encoded). If using Starknet React, this gets overridden by the same param in StarknetConfig
 
     // Session options 
     policies?: SessionPolicies;  // Session policies for pre-approved transactions

src/pages/controller/examples/react.md

@@ -79,7 +79,11 @@ const policies: SessionPolicies = {
 // Initialize the connector
 const connector = new ControllerConnector({
   policies,
-  rpc: 'https://api.cartridge.gg/x/starknet/sepolia',
+  // With the defaults, you can omit chains if you want to use:
+  // - chains: [
+  //     { rpcUrl: "https://api.cartridge.gg/x/starknet/sepolia" },
+  //     { rpcUrl: "https://api.cartridge.gg/x/starknet/mainnet" },
+  //   ]
 })
 
 // Configure RPC provider
@@ -99,6 +103,7 @@ export function StarknetProvider({ children }: { children: React.ReactNode }) {
   return (
     <StarknetConfig
       autoConnect
+      defaultChainId={mainnet.id}
       chains={[mainnet, sepolia]}
       provider={provider}
       connectors={[connector]}

src/pages/controller/getting-started.mdx

@@ -128,6 +128,7 @@ const provider = jsonRpcProvider({
 export function StarknetProvider({ children }: { children: React.ReactNode }) {
   return (
     <StarknetConfig
+      defaultChainId={sepolia.id}
       chains={[mainnet, sepolia]}
       provider={provider}
       connectors={[connector]}