Build/Test Tools: Support manual runs for the test old branch workflow. #12649

Job	Run time
Core running from build / Core running from build / Linux	2m 14s
Core running from src / Core running from src / Linux	2m 2s
Core running from build / Core running from build / Windows	3m 45s
Core running from src / Core running from src / Windows	4m 4s
Core running from build / Core running from build / MacOS	2m 2s
Core running from src / Core running from src / MacOS	1m 55s
Gutenberg running from build / Gutenberg running from build / Linux	8m 44s
Gutenberg running from src / Gutenberg running from src / Linux	8m 45s
Gutenberg running from build / Gutenberg running from build / Windows	12m 12s
Gutenberg running from src / Gutenberg running from src / Windows	11m 47s
Gutenberg running from build / Gutenberg running from build / MacOS	9m 50s
Gutenberg running from src / Gutenberg running from src / MacOS	7m 5s
Slack Notifications / Prepare notifications	6s
Slack Notifications / Fixed notifications	0s
Slack Notifications / Success notifications	2s
Slack Notifications / Cancelled notifications	0s
Slack Notifications / Failure notifications	0s
Failed workflow tasks	0s
	1h 14m 33s

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