ArrayIndexOutOfBoundsException in Constables#describe

[ljnelson]

java.lang.ArrayIndexOutOfBoundsException: Index 3 out of bounds for length 3
	at org.microbean.construct@0.0.15/org.microbean.construct.constant.Constables.describe(Constables.java:542)

[ljnelson]

See https://github.com/microbean/microbean-construct/blob/main/src/main/java/org/microbean/construct/constant/Constables.java#L528-L545