(Halfling Specific) Order of the Paw Cavalier cannot select Second Order Mythic

[Bezhukov]

Describe the bug
Order of the Paw is integrated into the Archetype itself instead of forced selection, so likely not consider a Cavalier Order by the game, though it functions as one. Likely implemented this way since regular Orders don't show up in UI until selected.

To Reproduce
Steps to reproduce the behavior:

1. Create Order of the Paw Cavalier, level up until selection of first Mythic Ability
2. Click on Choose Mythic Ability
3. Scroll down to Second Order
4. See it greyed out for lacking an Order. It's in the name of the archetype.

Expected behavior
Second Order being an available Mythic ability like other Cavaliers

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Additional context
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