Add notice of requesting source code in neuralnetworks 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:52931556a2df9742f1ad1eb7b35e3c77677d4be1) Merged-In: Iebea733b3289c16a0a01dccae159a42ec6bd7bae Change-Id: Iebea733b3289c16a0a01dccae159a42ec6bd7bae