Update VNDK snapshot v31 to build 7851294. am: a3b06bb302

Original change: https://android-review.googlesource.com/c/platform/prebuilts/vndk/v31/+/1870238

Change-Id: I5a22fc218c0e7163ce7803b6827ef179ae4086bc
tree: 211ef3a5ab8dc1df5a19f599b96cafeda4b79f8f
  1. arm/
  2. arm64/
  3. common/
  4. x86/
  5. x86_64/
  6. Android.bp
  7. OWNERS