It is necessary to enable libtinyxml2 on Windows because there are some tools included in the SDK for Windows (e.g., dexdump) which are depending on libartbase (see https://cs.android.com/android/platform/superproject/+/master:art/dexdump/Android.bp;l=43;drc=d539f8674a7fc796f7e77b6ca72315d2cda15d13 and https://cs.android.com/android/platform/superproject/+/master:art/dexdump/Android.bp;l=64-67;drc=d539f8674a7fc796f7e77b6ca72315d2cda15d13).

Test: build
Bug: 175048705
Change-Id: I46fe722c28f6b92d69b8d230ca0338204a5862cd
(cherry picked from commit 3255482a)
Merged-In: I46fe722c28f6b92d69b8d230ca0338204a5862cd