Address sanitizer errors on unregister

[stress-tess]

When building chapel with the address sanitizer (instructions here). We see an access after free error when something gets unregistered

>>> a = ak.arange(10)
>>> a.register('pda')
array([0 1 2 3 4 5 6 7 8 9])
>>> a.unregister()

This results in a AddressSanitizer: heap-use-after-free error. This seems to be the result of removing the name from the registry table

tab.remove(are.name);

This is the error that led to the nightly failures that caused us to skip testNA in #2726. But this doesn't just apply to categorical, it happens when unregistering any object