Improve Widgets calculations sync with tiles

[Clebal]

Story details: https://app.shortcut.com/cartoteam/story/148156

Approach:

I store in a ref the timeoutId of the debounced function. Everytime that an update in tiles or viewport can happens, the debounce is cleared.
Using fetch, we know that a tile is being fetched. Knowing that, we can stop the debounce because we know in advance that in a few seconds a tile will be loaded, avoiding unnecessary calculations.

[shortcut-integration]

This pull request has been linked to Shortcut Story #148156: Widgets calculations not synced with tiles.

[coveralls]

Pull Request Test Coverage Report for Build 1468274395

• 6 of 15 (40.0%) changed or added relevant lines in 3 files are covered.
• 1 unchanged line in 1 file lost coverage.
• Overall coverage decreased (-0.3%) to 69.235%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
packages/react-api/src/hooks/useViewportFeatures.js	4	13	30.77%

Files with Coverage Reduction	New Missed Lines	%
packages/react-api/src/hooks/useViewportFeatures.js	1	36.56%

Totals
Change from base Build 1398218595:	-0.3%
Covered Lines:	895
Relevant Lines:	1209

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💛 - Coveralls

[VictorVelarde]

@Clebal CR looks fine to me. I would like to test it locally, and then see if we can prepare a patch.
We would need also a little PR for updating documentation, adding info about this new parameter. Would you please create that in documentation repo?

[Clebal]

@VictorVelarde sure. I'll do it ASAP.

[padawannn]

Looks well. I like the approach