fix: provide z dtype

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---

Author: kgryte

lib/node_modules/@stdlib/ndarray/base/binary/lib/2d_blocked.js

@@ -152,7 +152,7 @@ function blockedbinary2d( x, y, z, fcn ) {
 	sz = o.sz;
 
 	// Determine the block size:
-	bsize = blockSize( x.dtype, y.dtype );
+	bsize = blockSize( x.dtype, y.dtype, z.dtype );
 
 	// Cache the indices of the first indexed elements in the respective ndarrays...
 	ox = x.offset;