BUG: Network Settings with multiple VPN servers & Poor configuration of Network Settings in Linux Mint

[meutrei]

 * Cinnamon version: Cinnamon 5.2.7
 * Distribution: Linux Mint 20.3
 * Graphics hardware: Nvidia - OpenGL renderer string: GeForce GT 635M/PCIe/SSE2

Issue
If you add more than 10 VPN connections from the taskbar menu it is almost impossible to change your desired connection.

Steps to reproduce

1. Add more than 10 VPN connections.
2. Click the More button > hover over the expanded list will close the expanded menu list instantly (bug 1)
3. If you do not click the More button and choose and click other server from the VPN shortlist nothing happens, you do not get any message like: connected. It just closes the Network menu instantly.
4. If you access the Network Settings menu from taskbar:
   a) You discover that you are connected to both VPN servers, the one you were previously connected to and the one you clicked on later (where you did not receive any messages: step 3. But the active connection (active IP) is the one that was connected the first time. (bug 2)
   b) In Network Settings you have no clue which VPN server(s) you are connected to. It doesn't show a bullet or change the color of the active VPN server, or say for example "connected". You have to click on each individual VPN server and see which one has the "toggle" button activated. In case you have 2 VPN servers activated (inherited behavior from step: 4 a) you have to disconnect from both in order to connect to another server.
   Try to guess here which VPN servers you are connected to:
   
5. Disconnecting from a particular VPN server is not possible because there is no button toggle on the active server.
   
6. And if you disconnect from the VPN (by switching off the toggle button) > it will connect you to the other VPN server that remained active / connected (from step 4 a), where you ended up connected to multiple servers through your previous attempt to connect to another server.

Expected behavior

1. From step 2: Shows the list without automatically closing when you mouse over it (expanded list from More button).
2. If you click to connect to another VPN server and you are already connected to another VPN server should automatically disconnect you from the VPN server you are already connected to and connect you to the new VPN server you clicked to connect to. I was using the RedHat Enterprise Linux 8 (RHEL 8.60) operating system before Linux Mint and this was the expected behavior.
3. RedHat Enterprise 8 and Ubuntu LTS have a toogle button on each VPN server. Activating the toggle button for a VPN server means automatically disconnecting (move OFF toggle button) for the server you are already connected to and moving the toggle button to ON for the new VPN server you try to connect. This should be the behavior in Linux Mint too!
4. It is a MUST that every VPN server to have an ON / OFF button toggle, otherwise you cannot disconnect.
5. When you go to Network Settings, where you have the list of VPN servers (see picture at 4 b) it should show you in list which server you are connected to: different color, a bullet, "connected text", etc (not to guessing by accessing all of them one by one).

[renepavlik]

This is a duplicate to #7093.