[1.x] Wrong username after receiving an attended transfer (Sip Plugin)

What version of Janus is this happening on? version: 1.3.0 commit: dfd86e34112f512b3a15ba6b7b52a3aa01ea347a

Have you tested a more recent version of Janus too? No, most recent release

Was this working before? No, also broken on 1.2.2

Is there a gdb or libasan trace of the issue?

Additional context If someone someone is being transfered to you via attended transfer, the username and displayname are not being updated to the now current callee. I guess the problem lies within janus_sip.c somewhere near line 5445, the callee never gets updated there.

Is this the intended behaviour?