Change `datanames()` into `names()` to avoid deprecation notes

[pawelru]

A follow-up after insightsengineering/teal.data#347

Please analyse if vbump of teal.data dep is needed.

there are several repos (please edit as you see the need):

• teal.modules.clinical
• teal.modules.general
• teal.gallery
• tlg-catalog