Fix cyclic reference errors while reducing identifiers.

Co-authored-by: Dmitrii Maganov <[email protected]>

modules/gdscript/gdscript_analyzer.cpp

@@ -2910,8 +2910,8 @@ void GDScriptAnalyzer::reduce_identifier_from_base_set_class(GDScriptParser::Ide
 
 	p_identifier->set_datatype(p_identifier_datatype);
 	Error err = OK;
-	GDScript *scr = GDScriptCache::get_full_script(p_identifier_datatype.script_path, err).ptr();
-	ERR_FAIL_COND_MSG(err != OK, "Error while getting full script.");
+	GDScript *scr = GDScriptCache::get_shallow_script(p_identifier_datatype.script_path, err).ptr();
+	ERR_FAIL_COND_MSG(err != OK, vformat(R"(Error while getting cache for script "%s".)", p_identifier_datatype.script_path));
 	scr = scr->find_class(p_identifier_datatype.class_type->fqcn);
 	p_identifier->reduced_value = scr;
 	p_identifier->is_constant = true;

modules/gdscript/gdscript_compiler.cpp

@@ -213,7 +213,7 @@ static bool _have_exact_arguments(const MethodBind *p_method, const Vector<GDScr
 }
 
 GDScriptCodeGenerator::Address GDScriptCompiler::_parse_expression(CodeGen &codegen, Error &r_error, const GDScriptParser::ExpressionNode *p_expression, bool p_root, bool p_initializer, const GDScriptCodeGenerator::Address &p_index_addr) {
-	if (p_expression->is_constant && !p_expression->get_datatype().is_meta_type) {
+	if (p_expression->is_constant && !(p_expression->get_datatype().is_meta_type && p_expression->get_datatype().kind == GDScriptParser::DataType::CLASS)) {
 		return codegen.add_constant(p_expression->reduced_value);
 	}