[Groovy Patch] Network applet - List of Wireless Networks doesn't refresh properly when clicking the applet logo

This is for GROOVY, as we are post-Debian import freeze and Debian has not imported this patch yet.

Will attach patch soon.

At the moment of writing, for Focal we don't have any confirmation of this occuring there. If it happens on Focal I'll patch.

[Impact]

 * As per upstream bug https://github.com/linuxmint/cinnamon/issues/9531:

 * When opening the network applet, the list of wireless networks is not refreshed properly. (It could show you nothing or not all the connections accurately)

[Test Case]

 * Go on a wireless network
 * Create a new network (can be a hotspot)
 * Open the network applet and switch to the new network
 * Click the new network
 * Click the applet again-you are connected to the new network, but the new network doesn't show in the list of networks.

 * The user here doesn't see the network he is connected too.

[Regression Potential]

 * Regression is very unlikely, however note:

 * I don't know how far back this bug goes to.
 * This may originate from 20.04.
 * Regressions can manifest from updates to internet connections (and/or new possible network appearances) or how the network is accessed from the internet.
 * If it were to happen, check to see if it happens on airplane mode.
 * This patch ensures the menu item will actually be there.

[Other Info]

 * As said, we aren't sure if this occurs in Focal
 * Debian Bug #969245: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=969245
 * Commit: https://github.com/linuxmint/cinnamon/commit/42960e3975c800c71f634b6d6d9949dab64813f3

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: cinnamon 4.4.8-4
ProcVersionSignature: Ubuntu 5.4.0-47.51-generic 5.4.55
Uname: Linux 5.4.0-47-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.6
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Wed Sep 9 11:36:13 2020
InstallationDate: Installed on 2020-04-23 (138 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: cinnamon
UpgradeStatus: No upgrade log present (probably fresh install)