[5MBUSA] User Service Announcement parameters alignment and clarifications
Proposal 1: Define Conformance profiles parameter for an MBS Distribution Session.
Proposal 2: Clarify that the Transport security protection flag for an MBS Distribution Session is provisioned by the MBS Application Provider or (in the special case of a User Service Announcement Channel) by the MBSF.
Proposal 3: Define optional MIME media type accompanying Object acquisition identifiers for an MBS Distribution Session that are mandatory in the case of Application Service Entry Point documents.
Proposal 4: Define Object repair back-off parameters for an MBS Distribution Session and clarify that the Object Repair feature is not provisioned by the MBS Application Provider.
Proposal 5: Define new reference point MBS‑1 used by MBS Application Provider to retrieve User Service Announcement bundles from the MBSF.
Proposal 6: Clarify that the full User Service Announcement exposed in the User Service advertisement notification is the User Service Announcement bundle.