ResourceImporter: Restore default append logic for new importers

This was changed in #56943 to allow adding new importers from plugins that
take precedence over built-in ones, but this should be opt-in, not the default
behavior.

Fixes #57730.

2 files changed, 7 insertions, 3 deletions

diff --git a/core/io/resource_importer.cpp b/core/io/resource_importer.cpp
index e167611d4a..9b6440e2a2 100644
--- a/core/io/resource_importer.cpp
+++ b/core/io/resource_importer.cpp
@@ -464,7 +464,11 @@ void ResourceImporter::_bind_methods() {
 	BIND_ENUM_CONSTANT(IMPORT_ORDER_SCENE);
 }
 
-void ResourceFormatImporter::add_importer(const Ref<ResourceImporter> &p_importer) {
+void ResourceFormatImporter::add_importer(const Ref<ResourceImporter> &p_importer, bool p_first_priority) {
 	ERR_FAIL_COND(p_importer.is_null());
-	importers.insert(0, p_importer);
+	if (p_first_priority) {
+		importers.insert(0, p_importer);
+	} else {
+		importers.push_back(p_importer);
+	}
 }
diff --git a/core/io/resource_importer.h b/core/io/resource_importer.h
index f242f29ccd..2fffc16ad8 100644
--- a/core/io/resource_importer.h
+++ b/core/io/resource_importer.h
@@ -80,7 +80,7 @@ public:
 	String get_internal_resource_path(const String &p_path) const;
 	void get_internal_resource_path_list(const String &p_path, List<String> *r_paths);
 
-	void add_importer(const Ref<ResourceImporter> &p_importer);
+	void add_importer(const Ref<ResourceImporter> &p_importer, bool p_first_priority = false);
 
 	void remove_importer(const Ref<ResourceImporter> &p_importer) { importers.erase(p_importer); }
 	Ref<ResourceImporter> get_importer_by_name(const String &p_name) const;