The commit restores a similar crop overlay like in the Odoo Android
Mobile App for the Barcode scanner.
This feature helps to scan the right barcode when the user scans a
barcode surrounded by other barcode, which before this commit a barcode
was scanned but in some cases not the good one. The commit solves the
problem by returning only the values into the rectangle overlay.
Part-of: odoo/odoo#112855
