Delete changelog for #96912 (#96937)

* Use a long to properly track added samples.

This helps avoid warnings around implicit conversions from long to
integer values in SortingDigest.

* Update docs/changelog/96912.yaml

* Another fix for invalid type conversion.

* Update docs/changelog/96912.yaml

* Delete changelog for #96912

This change should've been marked as non-issue as it fixed a problem
that's not present in any released version.

Author: kkrik-es