Exposed EdgeToEdgeUtils.enable() for broader use outside the package

Allows fragments with CollapsingToolbarBaseFragment to enable edge-to-edge from their activities

Fixes: 354624465
Test: Manual + pre-submit
Flag: EXEMPT bugfix
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:343928daec2a908f97d0364552e29dd0274761cd)
Merged-In: I95c5f29ecc3af5d3ab0b66f168eef9531f9e0aaa
Change-Id: I95c5f29ecc3af5d3ab0b66f168eef9531f9e0aaa
This CP is to address the test fail b/386136516 and b/392018692