fix: api group set timeout: 0s not working.

[SpectatorNan]

@server(
timeout: 0s
group: upload
prefix: upload
maxBytes: 10485760
)

fix api group set timeout is zero, but engine use default timeout duration. cause api timeout is not the expected result

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 94.80%. Comparing base (8690859) to head (be82bf4).
Report is 335 commits behind head on master.

Additional details and impacted files

Files with missing lines	Coverage Δ
rest/engine.go	100.00% <100.00%> (ø)
rest/server.go	96.90% <100.00%> (+0.37%)	⬆️

... and 18 files with indirect coverage changes

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[Copilot]

Copilot reviewed 5 out of 5 changed files in this pull request and generated 1 comment.