modrinth: force fabric reinstall when requested for modpacks

Author: itzg

src/main/java/me/itzg/helpers/modrinth/ModrinthPackInstaller.java

@@ -260,6 +260,7 @@ ModrinthPackInstaller modifyModLoaderPreparer(DependencyId modLoaderId, Modloade
     private void prepareFabric(SharedFetch sharedFetch, String minecraftVersion, String fabricVersion) {
         new FabricLauncherInstaller(this.outputDirectory)
             .setResultsFile(this.resultsFile)
+            .setForceReinstall(forceModloaderReinstall)
             .installUsingVersions(
                 sharedFetchOpts, minecraftVersion,
                 fabricVersion,