GDScript: Fix autocompletion issues with nested types

modules/gdscript/tests/scripts/completion/class_b.notest.gd

@@ -0,0 +1,31 @@
+extends Node
+class_name B
+
+class InnerB:
+	class InnerInnerB:
+		enum EnumOfInnerInnerB {
+		ENUM_VALUE_1,
+		ENUM_VALUE_2,
+	}
+
+	enum EnumOfInnerB {
+		ENUM_VALUE_1,
+		ENUM_VALUE_2,
+	}
+
+	signal signal_of_inner_b
+	var property_of_inner_b
+	func func_of_inner_b():
+		pass
+
+enum EnumOfB {
+	ENUM_VALUE_1,
+	ENUM_VALUE_2,
+}
+
+signal signal_of_b
+
+var property_of_b
+
+func func_of_b():
+	pass