fix: test-race failure

[egonspace]

Description

Through the test-race failure, I found that there were two concurrency-inconsistencies.

func (app *BaseApp) getContextForTx(s *state, txBytes []byte) sdk.Context {
	ctx := s.ctx.
		WithTxBytes(txBytes).
		WithVoteInfos(app.voteInfos) // app.voteInfos may be written by `BeginBlock` in concurrently

	return ctx.WithConsensusParams(app.GetConsensusParams(ctx))
}

and

// inner Query abci
ctx := sdk.NewContext(cacheMS, app.checkState.ctx.BlockHeader(), true, // checkState can be updated at `BeginRecheckTx` in concurrently
app.logger).WithMinGasPrices(app.minGasPrices)

Please review this very precisely.

closes: #XXXX

---

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• Wrote unit and integration tests
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• Added relevant godoc comments.
• Added a relevant changelog entry to the Unreleased section in CHANGELOG.md
• Re-reviewed Files changed in the Github PR explorer
• Review Codecov Report in the comment section below once CI passes

[codecov]

Codecov Report

Merging #159 (d9eb3b3) into v2/develop (1f739c5) will decrease coverage by 1.84%.
The diff coverage is 68.87%.

❗ Current head d9eb3b3 differs from pull request most recent head 50328be. Consider uploading reports for the commit 50328be to get more accurate results

@@              Coverage Diff               @@
##           v2/develop     #159      +/-   ##
==============================================
- Coverage       54.99%   53.15%   -1.85%     
==============================================
  Files             812      704     -108     
  Lines           51487    47261    -4226     
==============================================
- Hits            28317    25122    -3195     
+ Misses          20211    19579     -632     
+ Partials         2959     2560     -399     

Impacted Files	Coverage Δ
client/grpc/tmservice/query.pb.gw.go	30.06% <ø> (ø)
client/keys/root.go	100.00% <ø> (ø)
client/keys/utils.go	44.11% <ø> (+5.22%)	⬆️
crypto/armor.go	85.89% <ø> (ø)
crypto/keys/ed25519/ed25519.go	67.34% <ø> (ø)
crypto/keys/multisig/codec.go	100.00% <ø> (ø)
crypto/keys/secp256k1/secp256k1.go	86.79% <ø> (ø)
simapp/test_helpers.go	8.41% <0.00%> (+7.91%)	⬆️
types/address.go	65.71% <ø> (ø)
types/config.go	84.61% <ø> (ø)
... and 84 more