Removes the ability to accept nonencrypted answers to encrypted offers. Fixes some logic around bundled sessions and requirement for transport parameters. Bug: webrtc:11066 Change-Id: I56d8628d223614918a1e5260fdb8a117c8c02dbd Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/236344 Commit-Queue: Harald Alvestrand <hta@webrtc.org> Reviewed-by: Niels Moller <nisse@webrtc.org> Cr-Commit-Position: refs/heads/main@{#35298}