Picker: Update drive files icon in zero state.

Note this one specifically has colors in the icon.

Bug: b/329719529
Change-Id: I2c8e0769b40e2c737808ce22b2fd032305177464
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5421370


Commit-Queue: Evan Stade <estade@chromium.org>
Reviewed-by: Evan Stade <estade@chromium.org>
Auto-Submit: Patti Lor <patricialor@chromium.org>
Reviewed-by: Darren Shen <shend@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1282606}