merge method
Merges these overrides with another
Implementation
@override
TextConfig merge(MetaFieldConfig? other) {
  if (other == null) return this;
  if (other is TextConfig) {
    return this.copy(
      autocorrect: other.autocorrect,
      textInputType: other.textInputType,
      textCapitalization: other.textCapitalization,
      isDisabled: other.isDisabled,
      isRequired: other.isRequired,
    );
  } else {
    return this.copy(isDisabled: other.isDisabled, isRequired: isRequired);
  }
}