fix(connect): normalize v3 sequence nodes URLs

[tolgahan-arikan]

Summary

• normalize bare Sequence nodesUrl values before passing them to the V3 connector and DappClient
• align the V3 fallback RPC path with the {network} Sequence nodes URL contract
• make default wagmi transports resolve Sequence node URLs with Sequence network names and preserve the network path when appending the access key

Verification

• pnpm --filter @0xsequence/connect typecheck
• pnpm --filter @0xsequence/connect build:esm
• pnpm --filter example-react build
• manually verified the React example still worked after temporarily removing explicit nodesUrl and relayerUrl config overrides

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