Enable setFeatureState with string ids

[lanlugar]

Motivation

I have want to setFeatureState of wfs layers gotten directly from mapbox, i am using the name of the feature to set the id, so i can easily reference the layer, however mapbox setFeatureState apparently doesn't work with string ids

Design Alternatives

Design

Mock-Up

Concepts

Implementation

[ryanhamley]

Feature IDs such as those provided to setFeatureState can be a string, but the string has to be directly convertible to a base ten number. So '1234' is a valid feature ID but 'myID' or a hex number that includes letters wouldn't be. This is a technical limitation of the current vector tile specification.

[davidgilbertson]

"...can be a string, but the string has to be directly convertible to a base ten number. So '1234' is a valid feature ID but 'myID' or a hex number that includes letters wouldn't be. This is a technical limitation of the current vector tile specification"

It would be great to have that description in the setFeatureState description, as a note next to

As per #7632

I think it's caused many people many hours of head scratching.