SmileParser getValueAsString() issue with JsonToken.FIELD_NAME

[johhud1]

Test updates to reproduce the issue and naive fix attempt for #541

[cowtowncoder]

Ok I'll go over the PR; I think it makes sense overall.

But one process thing we need before I can merge the fix (assuming review goes fine); unless already done, we'd need a CLA. It's here:

https://github.com/FasterXML/jackson/blob/master/contributor-agreement.pdf

and only needs to be sent one before the first contribution is merged (good for all future PRs).
The usual way is to print it, fill & sign, scan/photo, email to cla at fasterxml dot com.
Once I get it can proceed with merging (and probably in this case also backporting in 2.18 at least, maybe 2.17)

[johhud1]

Just emailed my signed CLA

[cowtowncoder]

CLA received.

[cowtowncoder]

Looks good; will extend a bit to handle other formats too.

[cowtowncoder]

Ok: added tests to ensure all 5 format backends work (as well as test for JsonParser.getValueAsString(String defaultValue)) -- and matching fixes (some worked, some didn't).

Thank you for reporting this @johhud1 and submitting a good fix for Smile case.