Improve handling of non-String principal claim values

[omlip]

Fix #9212

[omlip]

@jzheaux It seems I did something wrong using Git (I rebase against master) this is why we have all the commits in this.

I guess it is not so evident to review this actually. Do we leave this PR as it is or I create a new one and we close/archive this one ?

[jzheaux]

I think if you do a rebase, it will resolve the issue. If we imagine your fork is called origin and this is called spring-projects, you can do the following:

git checkout master
git reset --hard spring-projects/master
git pull spring-projects master
git checkout issues/9212
git rebase master
git push origin +issues/9212

[jzheaux]

Thanks, @omlip! In preparation for merging, will you please squash your four commits into one and ensure that the resulting commit message contains the phrase "Closes gh-9212"?

[omlip]

Sure

[jzheaux]

Thanks, @omlip! This is now merged into master.