spanification: Add `#pragma allow_unsafe_buffers` to component/*

See `//docs/unsafe_buffers.md`

This is a preparation to fix each files.
This CL has no behavior changes.

This patch was fully automated using script:
https://paste.googleplex.com/5614491201175552

See internal doc about it:
https://docs.google.com/document/d/1erdcokeh6rfBqs_h0drHqSLtbDbB61j7j3O2Pz8NH78/edit?resourcekey=0-hNe6w1hYAYyVXGEpWI7HVA&tab=t.0

AX-Relnotes: n/a.
Bug: 40285824
Change-Id: I24ff0aee7a6cbe6da11a08830135449ccf8f2ae2
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5717711
Commit-Queue: Arthur Sonzogni <arthursonzogni@chromium.org>
Auto-Submit: Arthur Sonzogni <arthursonzogni@chromium.org>
Reviewed-by: Cait Phillips <caitkp@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1335315}
NOKEYCHECK=True
GitOrigin-RevId: b948e67a9c2fa2f8adff2206ef00cccde3f8640a
9 files changed