TSM arrayCursorIterator some cursors statistics are getting excluded from Stats()

[GeorgeMac]

Steps to reproduce:

See the failing test for the first commit here #15731

Expected behavior:

Stats returned by array cursor iterator should be one of (I am unsure of the desired behavior):

• The accumulated stats for all observed cursors
• The current in-focus cursor (I have assumed this one so far)

Actual behavior:

Stats() switches over its known set of instantiated cursors in a arbitrary order:

• float
• int
• uint
• boolean
• string

Going down the list it adds the first non-nil of these cursor types.

It does this for both acending and descending and its sums the two stats (one for asc and one for desc).

Environment info:

N/A see failing test in assocated PR

Config:

N/A