[Bug] Combat speed still 1.0 for some units

Even with 1.05 changes to made default combat speed 2.0, several premade sovereigns have it still at set 1.0. Also, it happen to all 3 heroes from campaign too.

There are other non-hero units that have this too. Like Sentinel from Warlord trait, or those Fallen pre-designed peasants.

I looked a bit into various xml files, and I think the issue is that all these unit had no combat speed attribute set at all, so game defaults it to 1.0.