[Infra UI] Only calculate the waffle map layout once the width and height are set

[simianhacker]

Summary

This PR attempts to fix the "Waffle Map Shake" by only calculating the layout once. Otherwise as elements are added to the DOM the container expands and with each expansion of the container the sizes are recalculated. There are situations where the width/height are on the cusp and it get's stuck in a loop flipping from one dimension to the other.

Fixes #34235
Fixes #27500
Fixes #34248

Checklist

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• This was checked for cross-browser compatibility, including a check against IE11
• Any text added follows EUI's writing guidelines, uses sentence case text and includes i18n support
• Documentation was added for features that require explanation or tutorials
• Unit or functional tests were updated or added to match the most common scenarios
• This was checked for keyboard-only and screenreader accessibility

For maintainers

• This was checked for breaking API changes and was labeled appropriately
• This includes a feature addition or change that requires a release note and was labeled appropriately

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[simianhacker]

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