fix: improve identifier escaping validation #15366

Job	Run time
Setup PHP Version for Code Coverage	4s
Others (8.3) / Sanity Tests	1m 14s
Others (8.4) / Sanity Tests	1m 3s
Others (8.2) / Sanity Tests	58s
Others (8.5) / Sanity Tests	1m 9s
SeparateProcess	0s
DatabaseLive	0s
CacheLive	0s
Upload coverage results to Coveralls	0s
	4m 28s

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