fix: Ensure flathub repo is always installed #2021

Job	Run time
Make (main, bluefin, 38)	4m 50s
Make (main, bluefin, 39)	5m 25s
Make (main, bluefin-dx, 38)	9m 17s
Make (main, bluefin-dx, 39)	9m 3s
Make (nvidia, bluefin, 38)	5m 53s
Make (nvidia, bluefin, 39)	8m 36s
Make (nvidia, bluefin-dx, 38)	14m 11s
Make (nvidia, bluefin-dx, 39)	10m 22s
Make (asus, bluefin, 38)	4m 9s
Make (asus, bluefin, 39)	6m 34s
Make (asus, bluefin-dx, 38)	9m 3s
Make (asus, bluefin-dx, 39)	10m 5s
Make (asus-nvidia, bluefin, 38)	5m 57s
Make (asus-nvidia, bluefin, 39)	5m 23s
Make (asus-nvidia, bluefin-dx, 38)	8m 17s
Make (asus-nvidia, bluefin-dx, 39)	9m 41s
Make (framework, bluefin, 38)	5m 31s
Make (framework, bluefin, 39)	7m 18s
Make (framework, bluefin-dx, 38)	8m 51s
Make (framework, bluefin-dx, 39)	9m 50s
Make (surface, bluefin, 38)	6m 51s
Make (surface, bluefin, 39)	7m 17s
Make (surface, bluefin-dx, 38)	8m 29s
Make (surface, bluefin-dx, 39)	9m 47s
Make (surface-nvidia, bluefin, 38)	5m 58s
Make (surface-nvidia, bluefin, 39)	5m 41s
Make (surface-nvidia, bluefin-dx, 38)	8m 1s
Make (surface-nvidia, bluefin-dx, 39)	9m 24s
Check all builds successful	1s
	3h 39m 45s

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