### 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)

}
					} else {
						const String name = String(info.name);
						if (!shader->render_modes.has(name)) {
							ScriptLanguage::CodeCompletionOption option(name, ScriptLanguage::CODE_COMPLETION_KIND_PLAIN_TEXT);
							r_options->push_back(option);
						}
					}
				}
			}
			return OK;
		} break;
		case COMPLETION_STRUCT: {
			if (shader->structs.has(completion_struct)) {
				StructNode *node = shader->structs[completion_struct].shader_struct;
				for (int i = 0; i < node->members.size(); i++) {
					ScriptLanguage::CodeCompletionOption option(node->members[i]->name, ScriptLanguage::CODE_COMPLETION_KIND_MEMBER);
					r_options->push_back(option);
				}
			}
			return OK;
		} break;
		case COMPLETION_MAIN_FUNCTION: {
			for (const KeyValue<StringName, FunctionInfo> &E : p_info.functions) {
				if (!E.value.main_function) {
					continue;
				}
				bool found = false;
				for (int i = 0; i < shader->functions.size(); i++) {
					if (shader->functions[i].name == E.key) {