bad tx returns non-error

[araskachoi]

System info: [Include Ethermint commit, operating system name, and other relevant details]
branch: development

Steps to reproduce:

1. start the network with ./init.sh
2. send multiple transactions with the same nonce

Expected behavior: [What you expected to happen]

should give an error (with possible err msg). this error message should give:
invalid nonce; got 1, expected 2

Actual behavior: [What actually happened]

returns a tx hash:
{"jsonrpc":"2.0","id":1,"result":"0xeea0292cffd6a3724cb9e6678127a30baaa17430b59e23742079448d22dba8cf"}

Additional info: [Include gist of relevant config, logs, etc.]

[github-actions]

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