Some missed updates to finish plumbing float32-filterable for Chrome.

Bug: dawn:1664
Change-Id: If63abc3467da046a14217195e75c6a9fc4cadff7
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4549861


Commit-Queue: Loko Kung <lokokung@google.com>
Reviewed-by: Austin Eng <enga@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1146722}