home: don't enable i3 by default #433

Job	Run time
Flake check	1m 28s
Format check	24s
Nix packages (ansel)	27s
Nix packages (grafanaDashboards/nginx)	20s
Nix packages (grafanaDashboards/node-exporter)	21s
Nix packages (kaleidoscope-udev-rules)	20s
Nix packages (sddm-sugar-candy)	17s
Nix packages (spot)	19s
NixOS configs (boreal)	4m 51s
NixOS configs (hades)	2m 25s
NixOS configs (hephaestus)	3m 35s
NixOS configs (talos)	3m 32s
NixOS configs (thanatos)	1m 35s
	19m 54s

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