refactor: enable instanceof and strictBooleans rector set #12676

Job	Run time
Setup PHP Version for Code Coverage	1s
Others (8.1) / Sanity Tests	2m 17s
Others (8.3) / Sanity Tests	2m 27s
Others (8.2) / Sanity Tests	2m 35s
CacheLive	0s
DatabaseLive	0s
SeparateProcess	0s
Upload coverage results to Coveralls	0s
	7m 20s

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