Merge pull request #78303 from ian-twilightcoder/clang-importer-search-paths

[ClangImporter] clang's -iframework comes before builtin usr/local/include, but Swift's -Fsystem comes after

lib/Serialization/SerializedModuleLoader.cpp

@@ -99,7 +99,7 @@ std::optional<bool> forEachModuleSearchPath(
         callback) {
   for (const auto &path : Ctx.SearchPathOpts.getImportSearchPaths())
     if (auto result =
-            callback(path, ModuleSearchPathKind::Import, /*isSystem=*/false))
+            callback(path.Path, ModuleSearchPathKind::Import, path.IsSystem))
       return result;
 
   for (const auto &path : Ctx.SearchPathOpts.getFrameworkSearchPaths())