Revisit recursion in TypeBinding.isTypeArgumentContainedBy()

After https://github.com/eclipse-jdt/eclipse.jdt.core/pull/5054 we might also try to get rid of some of the unspecified recursion from TypeBinding.isTypeArgumentContainedBy(). At least "_allow ? to be matching ? extends Object at depth 2_" shouldn't need any explicit code any more.


See https://github.com/eclipse-jdt/eclipse.jdt.core/issues/5028#issuecomment-4392906809