TypeDescriptor hashCode could be improved

[kilink]

TypeDescriptor just returns the hashCode of the underlying raw type, but for parameterized types this can lead to different TypeDescriptors having the same hashes:

var listOfString = TypeDescriptor.collection(List.class, TypeDescriptor.valueOf(String.class));
var listOfInteger = TypeDescriptor.collection(List.class, TypeDescriptor.valueOf(Integer.class));
listOfString.hashCode() == listOfInteger.hashCode(); // true

This may impact conversion service caching / lookup due to increased hash collisions for instance.

[bstan7168-rgb]

#36746