### 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 (precision2 != PRECISION_DEFAULT && _validate_precision(type2, precision2) != OK) {
									return ERR_PARSE_ERROR;
								}
								int array_size2 = 0;
								tk = _get_token();
								if (tk.type == TK_BRACKET_OPEN) {
									bool is_unknown_size = false;
									Error error = _parse_array_size(p_block, p_function_info, false, nullptr, &array_size2, &is_unknown_size);
									if (error != OK) {
										return error;
									}
									if (is_unknown_size) {
										array_size2 = var.array_size;
									}
									tk = _get_token();
								} else {
									_set_expected_error("[");
									return ERR_PARSE_ERROR;
								}
								if (precision != precision2 || type != type2 || struct_name != struct_name2 || var.array_size != array_size2) {
									String from;
									if (precision2 != PRECISION_DEFAULT) {
										from += get_precision_name(precision2);
										from += " ";
									}
									if (type2 == TYPE_STRUCT) {
										from += struct_name2;
									} else {
										from += get_datatype_name(type2);