Attribution for L.esri.Vector.vectorTileLayer

[gavinr]

Describe the bug

In #133/#135 we fixed the attribution for L.esri.Vector.vectorBasemapLayer(..) when an ID is passed. For example:

L.esri.Vector.vectorBasemapLayer("3e1a00aeae81496587988075fe529f71", ...);

We should have also fixed the case for L.esri.Vector.vectorTileLayer(..) when an ID is passed. For example:

L.esri.Vector.vectorTileLayer("3e1a00aeae81496587988075fe529f71", ...);

See the 5th example here:

https://codepen.io/gavinr/pen/ExEOdwd?editors=0010

Reproduction

https://codepen.io/gavinr/pen/ExEOdwd?editors=0010

• Expected: the 5th example should contain the "Powered by Esri" attribution.
• Actual: the 5th example does not contain the "Powered by Esri" attribution.

Logs

No response

System Info

Esri Leaflet Vector version: `v3.1.4`.

Additional Information

Originally logged in #142 - thank you @ItaiEinhorn.