Remove the kHistoryPreventSandboxedNavigation feature

Bug: 705583
Change-Id: Iab3ae2135f2c31d3edc1d597b8ee240a791f5f32
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3387371


Reviewed-by: Charles Reis <creis@chromium.org>
Reviewed-by: Dave Tapuska <dtapuska@chromium.org>
Commit-Queue: Dominic Farolino <dom@chromium.org>
Cr-Commit-Position: refs/heads/main@{#961028}