Adjust freezer tick in settings tests of IronOS integration

[tr4nt0r]

Proposed change

Initial states for settings entities are retrieved only after all the entities have been registered. This is done by requesting a coordinator refresh in async_added_to_hass. The coordinator has a debounce of 3s, giving enough time to finish registering all entities and then retrieving the values for all entities at once.

The tests had a timeskip of 60s, which is the update interval of the settings coordinator but the initial refresh happens after 3s.

Type of change

• Dependency upgrade
• Bugfix (non-breaking change which fixes an issue)
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• New feature (which adds functionality to an existing integration)
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• Breaking change (fix/feature causing existing functionality to break)
• Code quality improvements to existing code or addition of tests

Additional information

• This PR fixes or closes issue: fixes #
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