Deprecate enableTwigSandbox() #11677

Job	Run time
ci / Code Quality / PHPStan / PHPStan	1m 51s
ci / Code Quality / Rector / Rector	1m 46s
ci / Code Quality / ECS / ECS	34s
ci / Code Quality / Prettier / Prettier	47s
ci / Notify Slack / on failure	3s
ci / Tests	0s
ci / Notify Slack / on cancelled	-1s
ci / Notify Slack / on success	-1s
	4m 59s

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