### 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)

matches.insert(block->parent_function->arguments[i].name, ScriptLanguage::CODE_COMPLETION_KIND_VARIABLE);
							}
						}
						skip_function = block->parent_function->name;
					}
					block = block->parent_block;
				}
				if (comp_ident) {
					if (is_shader_inc) {
						for (int i = 0; i < RenderingServer::SHADER_MAX; i++) {
							const HashMap<StringName, ShaderLanguage::FunctionInfo> info = ShaderTypes::get_singleton()->get_functions(RenderingServer::ShaderMode(i));
							if (info.has("global")) {
								for (const KeyValue<StringName, BuiltInInfo> &E : info["global"].built_ins) {
									ScriptLanguage::CodeCompletionKind kind = ScriptLanguage::CODE_COMPLETION_KIND_MEMBER;
									if (E.value.constant) {
										kind = ScriptLanguage::CODE_COMPLETION_KIND_CONSTANT;
									}
									matches.insert(E.key, kind);
								}
							}
							if (info.has("constants")) {
								for (const KeyValue<StringName, BuiltInInfo> &E : info["constants"].built_ins) {
									ScriptLanguage::CodeCompletionKind kind = ScriptLanguage::CODE_COMPLETION_KIND_MEMBER;
									if (E.value.constant) {
										kind = ScriptLanguage::CODE_COMPLETION_KIND_CONSTANT;
									}
									matches.insert(E.key, kind);
								}
							}
							if (skip_function != StringName() && info.has(skip_function)) {