ANDROID: vendor_hooks: add hook to record slab free

Add a hook in slab_free to trace memory leaks and ensure that all
single-object free operations are properly monitored.

Bug: 428807705
Bug: 434600944
Change-Id: I971f82be24822422b6a6723e8cbb01c98cd2f6b4
Signed-off-by: wei li <sirius.liwei@honor.corp-partner.google.com>
(cherry picked from commit c181c478)