Bump NetworkStack target SDK to 35.

Make NetworkStack module be up-to-date with latest SDK.

behavior changes for SDK 35:
https://developer.android.com/about/versions/15/behavior-changes-15

Bug: 345078538
Test: atest NetworkStackTests
Test: atest NetworkStackRootTests
Test: manual testing
(cherry picked from https://android-review.googlesource.com/q/commit:1d3a31431d3585a99c23d20876890ff25def01dd)
Merged-In: Ife57b15efd381a488ea1310dac81e50a8aa462bb
Change-Id: Ife57b15efd381a488ea1310dac81e50a8aa462bb