### 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)

} break;
								case TK_HINT_ROUGHNESS_GRAY: {
									new_hint = ShaderNode::Uniform::HINT_ROUGHNESS_GRAY;
								} break;
								case TK_HINT_ANISOTROPY_TEXTURE: {
									new_hint = ShaderNode::Uniform::HINT_ANISOTROPY;
								} break;
								case TK_HINT_RANGE: {
									if (type != TYPE_FLOAT && type != TYPE_INT) {
										_set_error(vformat(RTR("Range hint is for '%s' and '%s' only."), "float", "int"));
										return ERR_PARSE_ERROR;
									}
									tk = _get_token();
									if (tk.type != TK_PARENTHESIS_OPEN) {
										_set_expected_after_error("(", "hint_range");
										return ERR_PARSE_ERROR;
									}
									tk = _get_token();
									float sign = 1.0;
									if (tk.type == TK_OP_SUB) {
										sign = -1.0;
										tk = _get_token();
									}
									if (tk.type != TK_FLOAT_CONSTANT && !tk.is_integer_constant()) {
										_set_error(RTR("Expected an integer constant."));
										return ERR_PARSE_ERROR;
									}
									uniform.hint_range[0] = tk.constant;
									uniform.hint_range[0] *= sign;
									tk = _get_token();