Wrong animation selected for unit activity

[Langbart]

The recent animation cleanup in the actor files causes a lot of issues. Very often a wrong animation is being displayed.

to reproduce for an Athens spearman

• Start a map with Athens, select the spearmen and have them start collecting wood.
• Pay attention when they move between drop points.
• See GIF/Image below for more clarity. On the left side is [26964], on the right side [26963].

bisect

The problem with the Athenian spearman described above occurred with [26964].
More civs and units are affected, e.g. the Roman swordsman.

possible solution

Adding frequency="1"

binaries/data/mods/public/art/actors/units/athenians/infantry_spearman_b.xml

@@ -61 +61 @@
     <variant file="biped/approach_praise.xml"/>
   </group>
   <group>
-    <variant name="Idle"/>
+    <variant frequency="1" name="Idle"/>
     <variant file="biped/formations/phalanx_front.xml"/>
     <variant file="biped/formations/phalanx_mid.xml"/>
     <variant file="biped/formations/phalanx_back.xml"/>

related ticket

#6566

[Stan]

In 26978:

Add missing frequency for the idle variant.
Noticed by: @Langbart
Fixes #6579