Disallow deprecated Pluma icon names.
Use this rule to fail CI when static Pluma icon names use icons that have been renamed, merged, or scheduled for removal.
The rule reads deprecation metadata from @customerio/pluma-icons, so it stays
aligned with the icon package.
The rule reports static icon names on Icon / PlumaIcon, plus static icon
prop values such as icon and markerIcon on imported Pluma components.
Dynamic icon expressions are ignored.