Fix idle duration: off and forbid negative durations #5563

Job	Run time
compute-version	3s
build-docs / build-docs	1m 53s
build-artifacts / frontend-build	7s
build-artifacts / code-lint	46s
build-artifacts / runner-test (ubuntu-latest)	52s
build-artifacts / gateway-build	11s
build-artifacts / runner-test (macos-latest)	1m 2s
build-artifacts / python-build	23s
build-artifacts / generate-json-schema	19s
build-artifacts / python-test (macos-latest, 3.9)	2m 55s
build-artifacts / python-test (ubuntu-latest, 3.12)	4m 6s
build-artifacts / python-test (macos-latest, 3.12)	2m 14s
build-artifacts / python-test (ubuntu-latest, 3.13)	3m 49s
build-artifacts / python-test (ubuntu-latest, 3.9)	4m 6s
build-artifacts / python-test (macos-latest, 3.13)	2m 34s
build-artifacts / python-test (ubuntu-latest, 3.10)	4m 0s
build-artifacts / python-test (macos-latest, 3.11)	2m 44s
build-artifacts / python-test (macos-latest, 3.10)	3m 6s
build-artifacts / python-test (windows-latest, 3.11)	1m 54s
build-artifacts / python-test (windows-latest, 3.13)	1m 53s
build-artifacts / python-test (windows-latest, 3.12)	2m 3s
build-artifacts / python-test (ubuntu-latest, 3.11)	4m 4s
build-artifacts / python-test (windows-latest, 3.10)	1m 57s
build-artifacts / python-test (windows-latest, 3.9)	2m 23s
build-artifacts / runner-compile (ubuntu-24.04, linux, amd64)	35s
build-artifacts / runner-compile (ubuntu-24.04-arm, linux, arm64)	28s
upload-post-pypi-artifacts / upload-post-pypi-artifacts	14s
upload-pre-pypi-artifacts / upload-pre-pypi-artifacts	19s
	51m 0s

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