Improvement for flow-visibility e2e test #30120

Job	Run time
Check whether tests need to be run based on diff	14s
Verify docs and spelling	29s
Unit test (windows-2022)	8m 39s
Integration test	9m 45s
Build Antrea and antctl binaries	9m 43s
Golangci-lint (macos-latest)	8m 57s
Go benchmark test	4m 29s
Golangci-lint (ubuntu-latest)	7m 20s
Unit test (ubuntu-latest)	6m 17s
Check tidy, code generation and manifest	5m 30s
Build Antrea Windows binaries	1m 49s
	1h 3m 12s

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