zink: do not warn about rare features until used

zink: do not warn about rare features until used

We currently cause the following scary warning to be printed on
start-up for *every* application regardless if that feature is being
used or not when run on top of ANV:

> WARNING: Some incorrect rendering might occur because the selected
> Vulkan device (Intel(R) UHD Graphics 620 (KBL GT2)) doesn't support
> base Zink requirements: line_rast_feats.stippledRectangularLines
> line_rast_feats.stippledSmoothLines

There's no need to scare the users about this, as most applications
don't care about these combinational features. So let's instead emit a
warning when these features are attempted (but failed) to be used
instead.

Reviewed-By: Mike Blumenkrantz <michael.blumenkrantz@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/12587>