[stable31] feat: restrict calendar invitation participants #28722

Job	Run time
changes	51s
php8.1-webdav	1m 50s
php8.4-webdav	2m 7s
php8.2-webdav	1m 13s
php8.3-webdav	2m 5s
files-external-webdav-summary	5s
	8m 11s

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