[BUG][spring] report fix 11886 from java to spring generator - function fromValue for enum model have wrong end if enumUnknownDefaultCase=true

Created by: christophejan

#11886 has fixed function fromValue for enum mode if enumUnknownDefaultCase=true on java generator.

Could you please report this fix on spring generator (enumClass.mustache and enumOuterClass.mustache).

spring generator has enumUnknownDefaultCase option like java generator (see spring generator doc) and I don't think there is any reason to get an enum behavior different from java generator.