Add notice of requesting source code in crashrecovery

Flag: EXEMPT license change for b/418865751
Bug: 418865751
Test: presubmits
Test: lunch husky-trunk_staging-eng && m, an extra line is added at the top of NOTICE.html file in NOTICE.html.gz
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:6ac99476643f273a6ff369dc87c0b58843a02674)
Merged-In: I243707815b0de16df5016b0f8e429bb93877461f
Change-Id: I243707815b0de16df5016b0f8e429bb93877461f