Unable to scroll Caja tabs by mouse wheel

[Norbert]

#### Expected behaviour
In previous MATE 1.12.1 version (as it was in Ubuntu 16.04 LTS) user was able to scroll tabs of Caja with mouse wheel.

#### Actual behaviour
In modern MATE versions as in Ubuntu 19.10 (development version) user is unable to scroll tabs of Caja with mouse wheel.

#### Steps to reproduce the behaviour
1. Open Caja
2. Open several new tabs with <Ctrl+T>
3. Try to scroll shown tabs with mouse wheel

#### MATE general version
1.22.1

#### Package version
1.22.1-1

#### Linux Distribution
Ubuntu 19.10 (development version)

ProblemType: Bug
DistroRelease: Ubuntu 19.10
Package: caja 1.22.1-1
ProcVersionSignature: Ubuntu 5.2.0-8.9-generic 5.2.0
Uname: Linux 5.2.0-8-generic x86_64
ApportVersion: 2.20.11-0ubuntu7
Architecture: amd64
CurrentDesktop: MATE
Date: Thu Aug 8 22:46:28 2019
InstallationDate: Installed on 2019-07-03 (35 days ago)
InstallationMedia: Ubuntu-MATE 19.10 "Eoan Ermine" - Alpha amd64 (20190703)
SourcePackage: caja
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Norbert (nrbrtx)]

Looks good in 21.10.