main/postmarketos-ui-phosh: no gnome-software first run dialog (MR 1453)

Disable the first run screen in GNOME software, which invites the user
to browse and install apps. We do not want people to use GNOME software to
do that when they open it for the first time in postmarketOS after
installing, we want them to do updates. So this dialog is misleading for
our users, and will lead to a bad experience for those who follow what
it suggests.

I think there's more wrong with that dialog (in context of postmarketOS),
more detailed reasoning and screenshot in:
https://gitlab.com/postmarketOS/pmaports/-/merge_requests/1449#note_385456592

main/postmarketos-ui-phosh/02-gnome-software-no-first-run

+[org/gnome/software]
+first-run=false

main/postmarketos-ui-phosh/APKBUILD

 # Maintainer: Bart Ribbers <bribbers@disroot.org>
 pkgname=postmarketos-ui-phosh
 pkgver=3
-pkgrel=3
+pkgrel=4
 pkgdesc="(Wayland) Mobile UI developed for the Librem 5 (works only with numeric passwords!)"
 url="https://puri.sm"
 arch="noarch !armhf"
@@ -40,6 +40,7 @@ source="60-lightdm-autologin.conf
 	qt-tweaks.sh
 	dconf-profile-postmarketos
 	01-phoc-scaling
+	02-gnome-software-no-first-run
 	"
 options="!check"
 
@@ -56,6 +57,8 @@ package() {
 		"$pkgdir"/etc/dconf/profile/user
 	install -Dm755 "$srcdir"/01-phoc-scaling \
 		"$pkgdir"/etc/dconf/db/postmarketos.d/01-phoc-scaling
+	install -Dm755 "$srcdir"/02-gnome-software-no-first-run \
+		"$pkgdir"/etc/dconf/db/postmarketos.d/02-gnome-software-no-first-run
 }
 
 qt_tweaks() {
@@ -72,4 +75,5 @@ sha512sums="c51a5cf93495069d71900dd1c6fbddfa3bdfb70dbab8141d1b115b6150975a12206c
 57793bb079c76ba3bdcfca7880aa887de11fe80e7a05557b78435e57feabab70fbaeedc42da3aec6f914c35bba8e8ee9918367516eb45ee247f63f694624f179  gtk-app-wayland.sh
 6e193eca3961a78d47b4656892eae34d019d9317a255a201f5ea61e3300caff04c526a27cd98d0edc072b36e3eaf3a1768f4cd27c5e2be8b19c167d535c820a6  qt-tweaks.sh
 e00756c2c056f68123d877f2f6a5ad3434ca7851095f021c26831c081728b821cf7947ba08d6742eee51d93dc83859a7ead553f4dcbc8b6fcefa33ae344ba178  dconf-profile-postmarketos
-6d99bd718fece9d202ebf76b807335b1e31ebeca52f2b8870bb4772787cf76bf4602f2506bc4ed077da0eac584ec72b879ad8317c926aabcf2ed48b0d7ba48f7  01-phoc-scaling"
+6d99bd718fece9d202ebf76b807335b1e31ebeca52f2b8870bb4772787cf76bf4602f2506bc4ed077da0eac584ec72b879ad8317c926aabcf2ed48b0d7ba48f7  01-phoc-scaling
+834d1c558b6a9ca26345928895a5436919aab13f944410240516953a13f8fdafae995af4b1baeee560a800c405a4d67c44bb92499bf8cacae7a17f6d9893577e  02-gnome-software-no-first-run"