[native][web] Expose Device List RPCs to JS

Summary: These RPCs were exposed to JS but not added to the Identity context.

Test Plan: Called them manually on both native and web and verified they're callable as expected.

Reviewers: kamil, michal

Reviewed By: kamil, michal

Subscribers: ashoat, tomek

Differential Revision: https://phab.comm.dev/D11290