Sort XML TV map channel list

[petermcneil]

Is your feature request related to a problem? Please describe.
After adding an XML channel feed from XML TV, one may require manually mapping streams to the channels in the guide. At the moment this is through one massive unsorted drop-down list, which can be hundreds of channels long

Describe the solution you'd like
The list of channels should be sorted alphabetically to make finding the one you need easier.

Describe alternatives you've considered

• Making the list searchable
• Making the automatic searching "better" i.e. fuzzy string matching

Additional context
I will find some screenshots

[jellyfin-bot]

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This request now lives here.