fix: sender not eoa on Monad Testnet

[TheDivic]

PR-Codex overview

This PR focuses on updating the gas estimation functionalities, adding support for new contract addresses, and refining the testing configurations.

Detailed summary

• Added MONAD_XYZ_KEY to environment variables.
• Updated rpcUrl in config/test-example.json.
• Incremented version to 0.2.65 in package.json.
• Enhanced SupportedChainSchema in src/chains/types.ts.
• Modified paymasters and added contract addresses in src/chains/chains.ts.
• Updated tests to utilize new contract addresses in src/gas-estimator/tests/e2e/estimateUserOperationGas.test.ts and src/entrypoint/v0.7.0/EntryPointV7Simulations.test.ts.
• Added MONAD_XYZ_KEY to GitHub workflow secrets.

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[github-actions]

size-limit report 📦

Path	Size
core (esm)	44.5 KB (-0.02% 🔽)
core (cjs)	46.21 KB (+0.46% 🔺)

[codecov]

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