Fix hyprland/language events not working with keyboard names with commas in them

[zjeffer]

Based on the proposal by @s1syph0s (#2137 (comment))

Should fix #2137 and #3222. Looking at https://wiki.hyprland.org/IPC/#events-list, activelayout has the parameters KEYBOARDNAME,LAYOUTNAME, so find_last_of should be more appropriate.

@dxrknesss @xadips Can you guys test this with your keyboard?

[dxrknesss]

YEAH IT'S FINALLY WORKING

logs:

huge thanks to you!

[zjeffer]

Mainly thanks to @s1syph0s ;)

Thanks for testing

@Alexays ready to merge

[Alexays]

Thans guys!

[tirsek]

Looks like I have the opposite problem. My keyboard name does not have a comma in it, but one of my layouts do:

[2024-07-01 19:53:57.162] [debug] hyprland IPC received activelayout>>at-translated-set-2-keyboard,English (US, intl., with dead keys)
[2024-07-01 19:53:57.186] [debug] hyprland language didn't find matching layout
[2024-07-01 19:53:57.186] [debug] hyprland language onevent with  with dead keys)
[2024-07-01 19:53:57.186] [debug] hyprland language update with full name 
[2024-07-01 19:53:57.186] [debug] hyprland language update with short name 
[2024-07-01 19:53:57.186] [debug] hyprland language update with short description 
[2024-07-01 19:53:57.186] [debug] hyprland language update with variant 
[2024-07-01 19:53:57.186] [debug] hyprland language formatted layout name

If I revert the change back to using ev.find_first_of(',') it works for me, but of course this would break the other case with the comma in the keyboard name. Maybe the only way out of this (short of changing the Hyprland IPC format itself), will be to try every comma in the string, one by one, until a valid keyboard language is found?