Add `CryptoApi.getBackupInfo` #10275

Job	Run time
Jest [integ] (Node lts/*)	2m 27s
Run Complement Crypto tests	0s
Jest [integ] (Node 22)	2m 22s
Jest [unit] (Node lts/*)	1m 39s
Downstream test element-web	0s
Jest [unit] (Node 22)	1m 43s
Downstream tests	1s
Downstream Complement Crypto tests	1s
Jest tests	1s
	8m 14s

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