Fix wrong MySQL/MariaDB report

[indigoxela]

Long story short: most of the "5.5" versions in the report are actually MariaDB 10.x.

More info about the problem here in this core issue, where it has been suggested to do better evaluation client-side.

[quicksketch]

I think doing this on the sending side (in Backdrop core) is probably the right fix.

The code for aggregating the display numbers is in _project_telemetry_load_aggregates(). It would be difficult to make that function handle the weird version numbers reported by MariaDB in a universal way.