[bug] small gas non-determinism in TestEvmState/TestTraceTx

[Unique-Divine]

The Ask

The TestTraceTx cases pass >90% of the time but sometimes fail without code
changes due to some inconsistency in gas used between runs. We should investigate
how this is possible and correct it.

Problem

This is what the failure looks when the test doesn't run.

grpc_query_test.go:916: 
        Error Trace:	/home/runner/work/nibiru/nibiru/x/evm/evmstate/grpc_query_test.go:916
                                    /home/runner/go/pkg/mod/github.com/stretchr/testify@v1.9.0/suite/suite.go:115
        Error:      	Not equal: 
                        expected: "0xc832"
                        actual  : "0xc826"
                        
                        Diff:
                        --- Expected
                        +++ Actual
                        @@ -1 +1 @@
                        -0xc832
                        +0xc826
        Test:       	TestEvmState/TestTraceTx/happy:_trace_erc-20_transfer_tx
        Messages:   	mismatch in trace result { key: gas, testCase: "happy: trace erc-20 transfer tx" }
grpc_query_test.go:916: 
        Error Trace:	/home/runner/work/nibiru/nibiru/x/evm/evmstate/grpc_query_test.go:916
                                    /home/runner/go/pkg/mod/github.com/stretchr/testify@v1.9.0/suite/suite.go:115
        Error:      	Not equal: 
                        expected: "0x8566"
                        actual  : "0x855a"
                        
                        Diff:
                        --- Expected
                        +++ Actual
                        @@ -1 +1 @@
                        -0x8566
                        +0x855a
        Test:       	TestEvmState/TestTraceTx/happy:_trace_erc-20_transfer_tx
        Messages:   	mismatch in trace result { key: gasUsed, testCase: "happy: trace erc-20 transfer tx" }
FAIL
FAIL	github.com/NibiruChain/nibiru/v2/x/evm/evmstate	9.850s