[util] Disable D32 for Metal Slug X

A bug in this old version of ANGLE lists D32 as a possible depth format but then proceeds to not handle it in the OpenGL conversion, causing an UNREACHABLE to occur and thus a crash.

src/util/config/config.cpp

@@ -256,6 +256,10 @@ namespace dxvk {
     { R"(\\SKShinoviVersus\.exe$)", {{
       { "d3d9.forceAspectRatio",            "16:9" },
     }} },
+    /* Metal Slug X                               */
+    { R"(\\mslugx\.exe$)", {{
+      { "d3d9.supportD32",                  "False" },
+    }} },
   }};