Dependent join back-off max ndv set to independent ndv estimate

The search being used to find a max ndv for the independent side is just setting the result to be the original ndv estimate for the independent side. This results in unnecessary back-offs of performing the dependent join with a log message similar to:

TEIID30011 Not performing dependent join using source $dsc/id0, since the number of distinct rows for expression g0.fkIdProductCode exceeds 1.333. You should ensure that your source statistics, including column distinct value counts, accurately reflect the source or use a MAKE_DEP hint to force the join.