### 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)

if (!found) {
								for (int k = 0; k < info.options.size(); k++) {
									ScriptLanguage::CodeCompletionOption option(String(info.name) + "_" + String(info.options[k]), ScriptLanguage::CODE_COMPLETION_KIND_PLAIN_TEXT);
									r_options->push_back(option);
								}
							}
						} 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);
							}
						}
					}
				}
			} else {
				for (int i = 0; i < p_info.render_modes.size(); i++) {
					const ModeInfo &info = p_info.render_modes[i];
					if (!info.options.is_empty()) {
						bool found = false;
						for (int j = 0; j < info.options.size(); j++) {
							if (shader->render_modes.has(String(info.name) + "_" + String(info.options[j]))) {
								found = true;
							}
						}
						if (!found) {
							for (int j = 0; j < info.options.size(); j++) {
								ScriptLanguage::CodeCompletionOption option(String(info.name) + "_" + String(info.options[j]), ScriptLanguage::CODE_COMPLETION_KIND_PLAIN_TEXT);
								r_options->push_back(option);
							}