Teach `export()` and `install(EXPORT)` to record this setting on the
imported targets they generate. Make this property's non-presence
authoritative on imported targets since they represent what was built
elsewhere.
Extend commit d27fe9dfba (AIX: Add option to archive shared libraries,
2024-06-18) to update the Ninja generator to support the new
`AIX_SHARED_LIBRARY_ARCHIVE` feature.
Fixes: #26332