Replace WorkflowIdReusePolicy.TerminateExisting by WorkflowIdConflictPolicy #1100

Job	Run time
build-lint-test (3.10, windows-latest)	7m 3s
build-lint-test (3.14, ubuntu-latest)	15m 50s
build-lint-test (3.14, macos-intel)	21m 57s
build-lint-test (3.10, macos-arm)	8m 17s
build-lint-test (3.14, windows-latest)	17m 48s
build-lint-test (3.14, macos-arm)	10m 48s
build-lint-test (3.10, ubuntu-latest)	5m 54s
build-lint-test (3.10, macos-intel)	11m 33s
	1h 39m 10s

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