[lua][module] BST Era Bug Fix

[Nobutadas]

Era BST had Heel, Leave, and Stay set to share the recastId with the 2-hour abilities. This sets each ability to it's own unique recastId.

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What does this pull request do?

Fixes an issue for era BST introduced in PR #9312 that combined Heel, Stay, and Leave into a recast with the 2-hour ability. It now correctly sets these abilities as their own separate recasts.

Steps to test these changes

Load the wotg module, verify Stay, Heel, and Leave do not share a recast with the 2-hour ability or each other.