Enable PostQuantumKyber by default on desktop

Bug: 40910498
Change-Id: If659815c37ae19d68a91755d5657edf7339d0247
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5366764


Commit-Queue: Nick Harper <nharper@chromium.org>
Commit-Queue: David Benjamin <davidben@chromium.org>
Auto-Submit: David Benjamin <davidben@chromium.org>
Reviewed-by: Nick Harper <nharper@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1271725}