Feature request: Disable break sub-options if the break is disabled

Prerequisites

• I'm using latest version: v
• I've checked Known issues
• I've checked Open issues

Description

I realised when I disabled Mini breaks, I would still get the notification before mini break starts. That's because I forgot to turn the option 'Show notification before Mini Break starts' option off, it might be a good idea to disable any sub-options as well (grey out) if the main break option is disabled.

Operating system: Windows 10

Steps to Reproduce

1. Toggle 'Show notification beforee Mini Break starts' to 'On'
2. Toggle 'Enable Mini Breaks' to 'Off'

Expected behavior:

• The sub-options for showing a notification or enable postponement are unchecked OR
• The sub option values are kept but they are greyed out and not active.
• May be even consider hiding the the Break for: and Every: options (if Mini breaks is not enabled then the sub options are probably just taking up extra space)

Actual behavior: [What actually happens]

The notification still came up for me.

Reproduces how often: [What percentage of the time does it reproduce?]

Can't check at the moment, but I can report back when I get a chance.