Ruff: reformat tools (part 1/3: accessibility .. generate_stubs).

Preserve yapf style to the best capacity.

LSC doc:
https://docs.google.com/document/d/1P6AE9aeKuFkxPAYInYxLFIpDgpiCAT-S_BQkNU0lb3s/edit?tab=t.0

Onboarded using the following command: `~/cr/depot_tools/ruff_chromium format .`

NO_IFTTT=reformatting only.
BYPASS_RECITATION_REASON=reformatting only.
Bug: 40874143

Change-Id: I101ab8185a98f6b5a2ce46c8503e8bf26a6a6964
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/8260488
Owners-Override: Alex Ovsienko <ovsienko@google.com>
Reviewed-by: Junji Watanabe <jwata@google.com>
SLSA-Policy-Verified: SLSA Policy Verification Service <devtools-gerritcodereview-exitgate@google.com>
Commit-Queue: Alex Ovsienko <ovsienko@google.com>
Cr-Commit-Position: refs/heads/main@{#1680318}
NOKEYCHECK=True
GitOrigin-RevId: 6c9a0b79e95b693f05596b540879d15bc5d503dd