I remember having a similar setup – no UCS but an https proxy conflicting with this requirement.
As I use nginx I can’t tell if it’s possible with your setup. Basically, I had to configure my local services to listen on a different port than 443. Then, I had to configure a stream block which filters the packets according to their protocol and proxies them to either coturn or the alternative https port.
If Apache does not provide such features you’re still not out of luck if you can change the https port of Apache in the UCR or UMC somewhere. All you need is to change this port and install nginx. Then, you can configure nginx to do the protocol splitting.
Sorry for not being more precise.