Revert new public apis#104

Merged

coriolinus merged 3 commits intowire/stablefrom

revert-new-public-apis

May 22, 2025

Commits on May 22, 2025

Revert "feat: `ProposalQueue::from_committed_proposals` is public"
coriolinus
committed
Revert "feat: add a public getter for proposal store to public group"
coriolinus
committed
Revert "feat: it is possible to cheaply get a `PublicGroup` from a `MlsGroup`"
coriolinus
committed