This propsal is a continuation of the discussion in #4061, cc @bradzacher

The rule prefer-readonly-parameter-types is known to not play nicely with certain types, with the canonical example being the HTMLElement from the standard lib. This type cannot be made deep-readonly, as that breaks TS compilation altogether.

Outstanding questions

• Should only the types themselves be ignored, or should the check ignore them, even if they are part of a more complex type?