Adjust coverter getDomSubtreeFromData method call inside ve.dm.MWBlockImageNode to pass correct arguments (there was an API change).

Change-Id: I1918aee714363babf5182c699fd96ef9fd4fce55
Merge "Adjust coverter getDomSubtreeFromData method call inside ve.dm.MWBlockImageNode to pass correct arguments (there was an API change)."