[Multi-channel EPG] Opening EPG on HTTP stream causes OK button to remain disabled on channel selection

[wedebe]

! Before you log an issue, have you updated to the most recent version? It's possible the issue may have already been fixed. 7.3 openATV 7.3.20230530 (2023-05-27)

Describe the bug / Actual behaviour: [[A clear and concise description of what the bug is.]]

Expected behaviour: [[A clear and concise description of what you expected to happen.]]

Has this issue started to happen just recently? If yes, roughly when did it last work fine for you?

To reproduce: Steps to reproduce the behaviour:

1. Add a stream url to favourites bouquet if you don't have one already http://streams.electronicmusicradiogroup.org:9050

#SERVICE 4097:0:0:0:0:0:0:0:0:0:http%3a//streams.electronicmusicradiogroup.org%3a9050/:♪ Chilltrax
#DESCRIPTION ♪ Chilltrax

2. Zap to url stream
3. Open Multi-channel EPG
4. Scroll to a regular channel
5. Press OK
6. ... nothing happens...

Expected behaviour: Step 6 should zap to currently-selected channel.

Screenshots N/A

Image/Box Model (please complete the following information):

• Version: 7.3
• BoxModel: Mut@nt HD51

Additional context N/A

[jbleyel]

Link -> #3119