gh-116472: Replace literal newlines with escape characters in MSBuild files (GH-116473) am: bb6b562da7

Original change: https://android-review.googlesource.com/c/platform/external/python/cpython3/+/2999960

Change-Id: Ia2b57c759b3dab8283008994b13d52608b2f7c42
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>