chore: period type select refactor

[turban]

This PR will refactor the period type selector:

• clearPeriod boolean is changed to keepPeriod boolean to simplify the code. If keepPeriod is true, we will not clear the period when the period type is changed.
• hiddenPeriods systems settings is read in the PeriodTypeSelect component so we don't need to pass it in as a property.
• It is possible to show the period type select without the "Relative" option. We will use this later for some Earth Engine layers not supporting relative periods.
• The code setting the default period type was simplified: By default it will be set to the first option (which will be still be "Relative" for thematic layers). If we load a saved map, we will set the period type to "Relative" (first option) if a relative period is used.

For thematic layers there should be no change in behaviour with this code change.

[dhis2-bot]

🚀 Deployed on https://pr-2977--dhis2-maps.netlify.app

[cypress]

Passing run #2593 ↗︎

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Details:

Merge c2557cc into 5d33ca5...
Project: maps	Commit: 85826306e2 ℹ️
Status: Passed	Duration: 05:22 💡
Started: Sep 27, 2023 3:15 PM	Ended: Sep 27, 2023 3:20 PM

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