[Android] Polygon annotation alpha issue

[Etienne-io]

Platform: Android
Mapbox SDK version: 5.0.2

Using polygon annotation for display areas on a map, i found a strange behavior

Steps to trigger behavior

1. Add a symbol layer with an associated source
2. Draw a polygon with alpha = 1 (or without setting the option)

The symbol appears above the polygon

3. Set the alpha to 0.9 (or anything not 1)

The symbol appears below the polygon

Expected behavior

The order should be the same regardless the opacity.

Actual behavior

Order different with different opacity.

[jfirebaugh]

Duplicate of #8699.