[Spanify] Spanify components/feedback/redaction_tool

Migrate components/feedback/redaction_tool to base::span and
base::raw_span to improve memory safety

This is a Agent generated CL per http://go/catalyst-mini-dd

Bug:518020671

Change-Id: I0f0a53dd8cc9a1003e37de89c4f0d3642c96f1b0
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/8067885
Reviewed-by: Jonathan Lee <jonathanjlee@google.com>
Reviewed-by: Jimmy Gong <jimmyxgong@chromium.org>
Auto-Submit: Jiamei Liu <jiameil@google.com>
Commit-Queue: Jiamei Liu <jiameil@google.com>
Cr-Commit-Position: refs/heads/main@{#1662227}
NOKEYCHECK=True
GitOrigin-RevId: 557e0c665a3a143cddeca1227aa5d3bb126b22b6