Fixed string length check in LayerMapping
Fixed #23514 -- Prevented queries in PostGISOperations init

Thanks Mattia Procopio for the report.
Fixed #23443 -- Corrected erroneous FieldError message.

Thanks Tim Graham for the review.
Fixed a formatting issue in the 1.7 release notes.
Fixed Oracle GIS failures introduced by e9103402c0; refs #18757.

Thanks Marc Tamlyn for the patch.