rpath crankery: gnome-software and mutter

[ikeycode]

Despite exports working, some RPATH linkage isn't being detected as RPATH bound:

+                               "soname(libmutter-clutter-15.so.0(x86_64))",
+                               "soname(libmutter-cogl-15.so.0(x86_64))",
+                               "soname(libmutter-mtk-15.so.0(x86_64))",
                                "soname(libpango-1.0.so.0(x86_64))",
                                "soname(libpangocairo-1.0.so.0(x86_64))",
                                "soname(libpipewire-0.3.so.0(x86_64))",
@@ -275,12 +280,12 @@
                        "name": "mutter",
                        "provides": [
                                "binary(mutter)",
-                               "soname(libdefault.so(x86_64))",
                                "soname(libmutter-15.so.0(x86_64))",
-                               "soname(libmutter-clutter-15.so.0(x86_64))",
-                               "soname(libmutter-cogl-15.so.0(x86_64))",
-                               "soname(libmutter-cogl-pango-15.so.0(x86_64))",
-                               "soname(libmutter-mtk-15.so.0(x86_64))"
+                               "soname(mutter-15/libmutter-clutter-15.so.0(x86_64))",
+                               "soname(mutter-15/libmutter-cogl-15.so.0(x86_64))",
+                               "soname(mutter-15/libmutter-cogl-pango-15.so.0(x86_64))",
+                               "soname(mutter-15/libmutter-mtk-15.so.0(x86_64))",
+                               "soname(mutter-15/plugins/libdefault.so(x86_64))"
                        ]
                },

Both gnome-software and mutter prove ideal test cases.