flatpak: Do not cleanup /share

The cleanup of /share breaks translations in flatpak so we should avoid
to cleanup /share completely on any module.

flatpak/org.gnome.Fractal-release.json

@@ -70,7 +70,9 @@
                 "/include",
                 "/lib/pkgconfig",
                 "*.la",
-                "/share"
+                "/share/gir-1.0",
+                "/share/gtk-doc",
+                "/share/vala"
             ],
             "sources" : [
                 {

flatpak/org.gnome.Fractal.json

@@ -76,8 +76,10 @@
                 "/include",
                 "/lib/pkgconfig",
                 "*.la",
-                "/share"
-            ],
+                "/share/gir-1.0",
+                "/share/gtk-doc",
+                "/share/vala"
+             ],
             "sources" : [
                 {
                     "type" : "archive",