Normalization by integrated monitor should take into account detector masks when determining wavelength integration interval

[SimonHeybrock]

See

essdiffraction/src/ess/powder/correction.py

Lines 105 to 115 in 2fba55e

	# Clip `monitor` to the range of `detector`, where the bins at the boundary
	# may extend past the detector range (how label-based indexing works).
	det_coord = (
	detector.coords[dim] if dim in detector.coords else detector.bins.coords[dim]
	)
	lo = det_coord.nanmin()
	hi = det_coord.nanmax()
	monitor = monitor[dim, lo:hi]
	# Strictly limit `monitor` to the range of `detector`.
	edges = sc.concat([lo, monitor.coords[dim][1:-1], hi], dim=dim)
	monitor = sc.rebin(monitor, {dim: edges})

I think this is a bug, which likely was not noticed so far since neither 2-theta nor wavelength masking is used.