refactor: omit unnecessary reassignment

[liuyueyangxmu]

Description

The new version of Go has been optimized, and variables do not need to be reassigned.

For more info: https://tip.golang.org/wiki/LoopvarExperiment#does-this-mean-i-dont-have-to-write-x--x-in-my-loops-anymore

How Has This Been Tested?

• Tested CCTX in localnet
• Tested in development environment
• Go unit tests
• Go integration tests
• Tested via GitHub Actions

Summary by CodeRabbit

• Refactor
  • Updated internal code patterns in test suites and utility modules to improve code consistency and align with Go development best practices. No user-facing functionality changes.

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[coderabbitai]

📝 Walkthrough

Pre-merge checks and finishing touches

❌ Failed checks (1 inconclusive)

Check name	Status	Explanation	Resolution
Description check	❓ Inconclusive	The description provides clear motivation referencing Go's loop variable optimization but lacks testing evidence; only 2 of 5 checkboxes are marked despite claimed testing.	Clarify which tests were actually executed and verify claims of GitHub Actions testing. Complete the testing checklist with specific evidence.

✅ Passed checks (2 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title accurately captures the primary refactoring change: removing unnecessary variable reassignments in Go loops.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

✨ Finishing touches

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🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment

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📥 Commits

Reviewing files that changed from the base of the PR and between 737e30d and 4d059db.

📒 Files selected for processing (25)

• e2e/e2etests/legacy/test_rate_limiter.go (0 hunks)
• e2e/e2etests/test_stress_sui_deposit.go (0 hunks)
• e2e/e2etests/test_stress_sui_withdraw.go (0 hunks)
• e2e/utils/zetacore.go (0 hunks)
• pkg/chains/chain_test.go (0 hunks)
• pkg/os/path_test.go (0 hunks)
• x/crosschain/genesis.go (0 hunks)
• x/crosschain/keeper/abci_test.go (0 hunks)
• x/crosschain/keeper/cctx_test.go (0 hunks)
• x/crosschain/keeper/grpc_query_gas_price_test.go (0 hunks)
• x/crosschain/keeper/grpc_query_last_block_height_test.go (0 hunks)
• x/crosschain/keeper/msg_server_vote_inbound_tx_test.go (0 hunks)
• x/crosschain/keeper/msg_server_vote_outbound_tx_test.go (0 hunks)
• x/crosschain/simulation/decoders_test.go (0 hunks)
• x/emissions/simulation/decoders_test.go (0 hunks)
• x/fungible/keeper/evm_hooks_test.go (0 hunks)
• x/fungible/simulation/decoders_test.go (0 hunks)
• x/fungible/types/message_pause_zrc20_test.go (0 hunks)
• x/fungible/types/message_unpause_zrc20_test.go (0 hunks)
• x/observer/genesis.go (0 hunks)
• x/observer/keeper/grpc_query_node_account_test.go (0 hunks)
• x/observer/keeper/grpc_query_nonces_test.go (0 hunks)
• x/observer/keeper/grpc_query_tss_test.go (0 hunks)
• x/observer/simulation/decoders_test.go (0 hunks)
• x/observer/types/ballot_test.go (0 hunks)

💤 Files with no reviewable changes (25)

• x/crosschain/keeper/msg_server_vote_outbound_tx_test.go
• x/fungible/keeper/evm_hooks_test.go
• x/fungible/types/message_unpause_zrc20_test.go
• x/observer/types/ballot_test.go
• x/crosschain/keeper/abci_test.go
• x/crosschain/keeper/msg_server_vote_inbound_tx_test.go
• x/observer/keeper/grpc_query_tss_test.go
• x/emissions/simulation/decoders_test.go
• pkg/os/path_test.go
• e2e/e2etests/legacy/test_rate_limiter.go
• x/crosschain/keeper/cctx_test.go
• x/crosschain/keeper/grpc_query_last_block_height_test.go
• x/observer/keeper/grpc_query_node_account_test.go
• x/observer/keeper/grpc_query_nonces_test.go
• x/crosschain/keeper/grpc_query_gas_price_test.go
• x/fungible/simulation/decoders_test.go
• pkg/chains/chain_test.go
• x/fungible/types/message_pause_zrc20_test.go
• e2e/utils/zetacore.go
• x/crosschain/simulation/decoders_test.go
• x/observer/simulation/decoders_test.go
• e2e/e2etests/test_stress_sui_deposit.go
• e2e/e2etests/test_stress_sui_withdraw.go
• x/crosschain/genesis.go
• x/observer/genesis.go

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