Resolve 2 "failing" tests wrt 2.19: tests for issues #50, #56 now passing

[cowtowncoder]

Now that Jackson-databind issue FasterXML/jackson-databind#1467 is resolved for 2.19 branch, looks like 2 Kotlin module tests "fail" since they test for broken behavior. They can probably now be changed to properly pass, testing new working behavior.

For failed build see f.ex

https://github.com/FasterXML/jackson-module-kotlin/actions/runs/11808804264/job/32898017493

which was triggered by cascading rebuild CI.

[cowtowncoder]

Fixed via #849