[Enhancement] When automatic updates are enabled, allow completely hiding the tray icon

[NintendoManiac64]

Is your feature request related to a problem? Please describe.
Currently, if you have automatic updates enabled, the tray icon will still sometimes appear when it has found updates but they've not yet been installed.

Describe the solution you'd like
When automatic updates are installed, allow the option to always hide mintUpdate's tray icon.

Describe alternatives you've considered
One alternative I had considered is to just always immediately start installing updates right after it has checked for updates, but I believe the reason it checked but didn't immediately install is because there was a Firefox update but I was in the middle of using Firefox, so this alternative may not be valid.

Currently the only "solution" it seems is to straight-up disable Refresh the list of updates automatically checking for updates in mintUpdate, yet the automatic updater apparently is still able to find and install updates.

Additional context
There is a forum thread from around a year ago of a user with the exact same scenario as me (we both even have snapshots and the like configured):

• https://forums.linuxmint.com/viewtopic.php?f=47&t=350596

[github-actions]

This issue has been automatically marked as stale because it has not had
any activity in over 2 years.

If this issue is still relevant:

• Please test on a current version of this package.
• Add a comment with your findings

If no activity occurs in the next 30 days, this issue will be
automatically closed. Issues can be reopened if needed.

[NintendoManiac64]

I have since discovered that unchecking mintUpdate from the list of Startup can somewhat achieve this result, but at least back on older versions of Mint (I still haven't tested on Mint 22 due to a lack of #841), this will then cause flatpaks and cinnamon spices to not auto-update.

Therefore I hope it's not rude of me to ask if I may have a bit more time?

[mtwebster]

You don't need to comment on every single one. If it closes automatically it can still be re-opened. All you're doing now is resetting the timer so now none of these will close automatically if you never get around to re-checking.

[NintendoManiac64]

You don't need to comment on every single one. If it closes automatically it can still be re-opened. All you're doing now is resetting the timer so now none of these will close automatically if you never get around to re-checking.

Noted, but it's a bit late for that now. Besides, I have the github notification emails marked as unread and the main reason I couldn't get around to testing is because my guinea pig SSD was occupied up until just 2 days ago.