Era of Innovation ability ends the main phase abruptly #12443

Describe the bug
If you activate the ability of Era of Innovation to add EE when an artifact or artificer enters the battlefield during the first Main Phase, the Main Phase ends abruptly and moves to Beginning of Combat.

To Reproduce
Steps to reproduce the behavior:

1. Era of Innovation on the battlefield during first main phase
2. Cast or trigger an artifact or artificer etb
3. Accept prompt to activate enchantment ability and pay mana cost
4. EE credits your counter number, but ends the main phase.

Expected behavior
Turn should remain in the main phase after this event.

Desktop (please complete the following information):

• OS: Windows
• Browser: Brave (Chromium based)
• Version: Forge v 2.0.15