None, but that issue has no mention of what you said in the other message ("Only Messages was allowed to support it. At the time it was written, for example, i

None, but that issue has no mention of what you said in the other message ("Only Messages was allowed to support it. At the time it was written, for example, it was years after the Signal developers had asked for basic RCS support (2015) and given up on Google relenting and allowing it in 2018")