### Godot version

v4.1.dev.custom_build.a7276f1ce

### System information

Win10, AMD 2600, GeForce GTX 1060, Vulkan API 1.3.205

### Issue description

I can't get correct color data from an array of source_color type.
The color data is saved as **Color** in the file:
`shader_parameter/palette = [Color (1, 0, 0, 1), Color (0, 1, 0, 1), Color (0, 0, 1, 1)]`
Shouldn't it be saved as PackedColorArray?


### Steps to reproduce

1.Declare an array of source_color type.
2.Set colors.

### Minimal reproduction project

[shadertest.zip](https://github.com/godotengine/godot/files/11246504/shadertest.zip)

emit_signal(SNAME("globals_changed"));
	if (!interface->block_update) {
		interface->notify_property_list_changed();
	}
}
void ShaderGlobalsEditor::_bind_methods() {
	ClassDB::bind_method("_changed", &ShaderGlobalsEditor::_changed);
	ADD_SIGNAL(MethodInfo("globals_changed"));
}
void ShaderGlobalsEditor::_notification(int p_what) {
	switch (p_what) {
		case NOTIFICATION_VISIBILITY_CHANGED: {
			if (is_visible_in_tree()) {
				inspector->edit(interface);
			}
		} break;
		case NOTIFICATION_PREDELETE: {
			inspector->edit(nullptr);
		} break;
	}
}
ShaderGlobalsEditor::ShaderGlobalsEditor() {