Make DLL directory work in packaged cases as well (microsoft#4389)

## Change
Move the code that enables our .winmd to be found by the PS module out
of the unpackaged conditional block. It will now be run if we failed to
find a result for any reason.

src/Xlang/UndockedRegFreeWinRT/src/UndockedRegFreeWinRT/UndockedRegFreeWinRT/typeresolution.cpp

@@ -481,8 +481,8 @@ namespace UndockedRegFreeWinRT
 
         const UINT32 filter = PACKAGE_FILTER_HEAD | PACKAGE_FILTER_DIRECT | PACKAGE_FILTER_IS_IN_RELATED_SET;
         hr = HRESULT_FROM_WIN32(GetCurrentPackageInfo(filter, &dwBufferLength, nullptr, &dwPackagesCount));
-        // Only find the type if the it is a unpacakged app. Packaged apps can have their exe on their package graph, 
-        // which will allow type resolution against adjacent WinMDs.
+        // Only find the type next to the exe if the it is an unpackaged app. Packaged apps can have their exe on 
+        // their package graph, which will allow type resolution against adjacent WinMDs.
         if (hr == HRESULT_FROM_WIN32(APPMODEL_ERROR_NO_PACKAGE))
         {
             PCWSTR exeDir = nullptr;  // Never freed; owned by process global.
@@ -498,31 +498,38 @@ namespace UndockedRegFreeWinRT
 
             if (hr == RO_E_METADATA_NAME_NOT_FOUND)
             {
-                PCWSTR dllDir = nullptr;  // Never freed; owned by process global.
-                RETURN_IF_FAILED(GetProcessDllDir(&dllDir));
-
-                hr = FindTypeInDirectoryWithNormalization(
-                    pMetaDataDispenser,
-                    pszFullName,
-                    dllDir,
-                    phstrMetaDataFilePath,
-                    ppMetaDataImport,
-                    pmdTypeDef);
-
-                if (hr == RO_E_METADATA_NAME_NOT_FOUND)
-                {
-                    // For compatibility purposes, if we fail to find the type in the unpackaged location, we should return
-                    // HRESULT_FROM_WIN32(APPMODEL_ERROR_NO_PACKAGE) instead of a "not found" error. This preserves the
-                    // behavior that existed before unpackaged type resolution was implemented.
-                    hr = HRESULT_FROM_WIN32(APPMODEL_ERROR_NO_PACKAGE);
-                }
+                // For compatibility purposes, if we fail to find the type in the unpackaged location, we should return
+                // HRESULT_FROM_WIN32(APPMODEL_ERROR_NO_PACKAGE) instead of a "not found" error. This preserves the
+                // behavior that existed before unpackaged type resolution was implemented.
+                hr = HRESULT_FROM_WIN32(APPMODEL_ERROR_NO_PACKAGE);
             }
-            return hr;
         }
         else
         {
-            return RO_E_METADATA_NAME_NOT_FOUND;
-        }
+            hr = RO_E_METADATA_NAME_NOT_FOUND;
+        }
+
+        // If not successful looking next to an unpackaged exe, try looking next to our DLL.
+        if (FAILED(hr))
+        {
+            PCWSTR dllDir = nullptr;  // Never freed; owned by process global.
+            RETURN_IF_FAILED(GetProcessDllDir(&dllDir));
+
+            HRESULT dllHR = FindTypeInDirectoryWithNormalization(
+                pMetaDataDispenser,
+                pszFullName,
+                dllDir,
+                phstrMetaDataFilePath,
+                ppMetaDataImport,
+                pmdTypeDef);
+
+            if (SUCCEEDED(dllHR))
+            {
+                hr = dllHR;
+            }
+        }
+
+        return hr;
     }
 
     //