[1.7.x] Fixed #23537 -- Added Oracle GIS SchemaEditor.

Thanks Shai Berger for review.

Backport of a8f07530a7 from master
[1.7.X] Fixed #23561 -- Corrected a security doc example that requires an unquoted HTML attribute.

Thanks "djbug" for the report.
[1.7.X] How many is two?
[1.7.x] Fixed #23560 -- Fixed MigrationWrite to handle builtin types without imports.

Thanks Tim Graham for the review.

Backport of b23d47412c from master