Why are we overriding grafana?

[srid]

There should be comment in this file saying why we must maintain our own grafana package:

https://github.com/juspay/services-flake/blob/main/test/overlays/grafana.nix

---

Such a comment already exists on pgAdmin:

services-flake/test/overlays/pgadmin.nix

Lines 2 to 3 in 679abde

	# Because tests are failing on darwin: https://github.com/juspay/services-flake/pull/115#issuecomment-1970467684
	pgadmin4 = prev.pgadmin4.overrideAttrs (_: { doInstallCheck = false; });

(Though here, this overlay should only apply on darwin).