fix Pre-release filter

introduced here https://github.com/PrismLauncher/PrismLauncher/pull/3260
fixes #4415
reason: some snapshot have Pre-Release in our meta but when searching in
Modrinth this needs to be translated to -pre and the reverse needed to
be done for filtering after we fetched the version.
Now there are snapshots with -pre in name and that works with Modrinth
but when we translate it back we replace it with Pre-Release so the
easeiest patch is just to double the version(one with -pre one with
Pre-Release)

The correct one would be to complicate the code and identify the
versions that need the transition and only apply this for those.

Signed-off-by: Trial97 <alexandru.tripon97@gmail.com>

launcher/modplatform/modrinth/ModrinthPackIndex.cpp

@@ -126,7 +126,8 @@ ModPlatform::IndexedVersion Modrinth::loadIndexedPackVersion(QJsonObject& obj, Q
         return {};
     }
     for (auto mcVer : versionArray) {
-        file.mcVersion.append(ModrinthAPI::mapMCVersionFromModrinth(mcVer.toString()));
+        file.mcVersion.append({ ModrinthAPI::mapMCVersionFromModrinth(mcVer.toString()),
+                                mcVer.toString() });  // double this so we can check both strings when filtering
     }
     auto loaders = Json::requireArray(obj, "loaders");
     for (auto loader : loaders) {