[BUG] Open On Load setting not persistant on remote clients

[Zakkon]

Describe the bug Upon connecting to the Foundry server, remote clients accessing the server (through a browser) are met with the calendar opening by itself. Entering the configuration menu and turning 'Open On Load' to false will not stop this behavior, as that setting does not persist between sessions of play.

To Reproduce Steps to reproduce the behavior:

1. Host starts Foundry VTT server
2. Remote client logs on to the server, calendar auto-opens
3. Remote client turns off 'Open On Load'
4. Remote client closes their browser
5. Host closes the server
6. Host restarts the server again
7. Remote client logs on to the server, calendar auto-opens. 'Open On Load' can be found set to 'On' in the configuration menu.

Expected behavior The Open on Load setting should persist between sessions, so that a user accessing the server remotely doesn't have the calendar auto-open on load every time.

Screenshots

Foundry Information

• Foundry Version: 10, build 291
• Game System: DnD5e version 2.15
• Simple Calendar Version: 2.1.80

Browser (please complete the following information):

• Browser: Chrome, Firefox

Additional context As the host of the server, I can confirm all my remote players have this issue.

[Zakkon]

Having some trouble locating the source of the bug. Even changing the default values of 'openOnLoad' to 'false' doesn't seem to solve the issue. Suggesting a hasty but effective solution in #489