feat: add support for public clients and disabling standard auth flow #2655

Job	Run time
lint-check	39s
Select Jobs	5s
Schedule (all, unicorn, upgrade) / Test	20m 40s
Schedule (all, unicorn, install) / Test	14m 7s
Schedule (all, registry1, upgrade) / Test	23m 51s
Schedule (all, registry1, install) / Test	16m 12s
Schedule (all, upstream, install) / Test	14m 28s
Schedule (all, upstream, upgrade) / Test	21m 59s
Compliance Evaluation (registry1) / Evaluate	26s
Compliance Evaluation (upstream) / Evaluate	34s
Compliance Evaluation (unicorn) / Evaluate	35s
	1h 53m 36s

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