[badger v3] GC doesn't consider value log growth

[requilence (Roman Khafizianov)]

Hey. I have the same problem and made some efforts to fix it.

GC may not work in some cases

We are using Badger as a built-in DB on desktop and mobile devices. Before v2.0, GC was working not perfectly(because of random sampling) but most of the time it has acceptable results. But since badger 2.0 GC mostly not working for our use cases so we have started to dig in. What version of Go are you using (go version)? 1.17.8 What operating system are you using? macOS 12.1 What version of Badger are you using? v3.2103.2 Does this issue reproduce with the latest master? Yes Steps to …