### 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)

}
				tk = _get_token();
				if (tk.type == TK_BRACKET_OPEN) {
					
					_set_tkpos(prepos);
					expr = _parse_array_constructor(p_block, p_function_info);
				} else {
					if (tk.type != TK_PARENTHESIS_OPEN) {
						_set_error(RTR("Expected '(' after the type name."));
						return nullptr;
					}
					
					OperatorNode *func = alloc_node<OperatorNode>();
					func->op = OP_CONSTRUCT;
					if (precision != PRECISION_DEFAULT) {
						func->return_precision_cache = precision;
					}
					VariableNode *funcname = alloc_node<VariableNode>();
					funcname->name = get_datatype_name(datatype);
					func->arguments.push_back(funcname);
					int carg = -1;
					bool ok = _parse_function_arguments(p_block, p_function_info, func, &carg);
					if (carg >= 0) {
						completion_type = COMPLETION_CALL_ARGUMENTS;
						completion_line = tk_line;
						completion_block = p_block;
						completion_function = funcname->name;
						completion_argument = carg;
					}
					if (!ok) {