Minor inconsistency in Report format handing

This is a long-standing issue; compare the two lines in this segment of chat output:

The first line is output by a Report Trait on a piece. The second from a report field on a GKC button.
Notice that the first line has a leading space (not part of the Report Trait output field). The second does not.

Logged as issue #11226.

There’s no way to fix this without breaking existing modules.