Revert "[scudo] Apply filling when realloc shrinks and re-grows a block in-place (#93212)" am: 481bf7bc3a

Original change: https://android-review.googlesource.com/c/platform/external/scudo/+/3122432

Change-Id: I21e5d37d3ecf784585dd052a6b135c32d8b14f0f
Signed-off-by: Automerger Merge Worker <[email protected]>