### 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;
							default:
								error = true;
								break;
						}
						tk = _get_token();
#ifdef DEBUG_ENABLED
						if (keyword_completion_context & CF_CONST_KEYWORD) {
							keyword_completion_context ^= CF_CONST_KEYWORD;
						}
						if (keyword_completion_context & CF_FUNC_DECL_PARAM_SPEC) {
							keyword_completion_context ^= CF_FUNC_DECL_PARAM_SPEC;
						}
						if (_lookup_next(next)) {
							if (is_token_precision(next.type)) {
								keyword_completion_context = CF_FUNC_DECL_PARAM_TYPE;
							} else if (is_token_datatype(next.type)) {
								keyword_completion_context = CF_PRECISION_MODIFIER;
							}
						}
#endif 
						if (error) {
							return ERR_PARSE_ERROR;
						}
					}
					DataType param_type;
					StringName param_name;
					StringName param_struct_name;
					DataPrecision param_precision = PRECISION_DEFAULT;
					int arg_array_size = 0;