2026-May-09 - 2.7.15523

Fix(capitals): return empty instead of throwing when no capital (#14375)

Updates method contract which already returns an optional, to
return an empty optional if there is no player capital found.
Previously an exception was thrown, which is odd, and all
callers are set up to deal with the empty optional.
The exception likely should have been previously removed.

Resolves #13623