Feature: Implement Flee Mechanic and "Find" Button for Multi-Enemy Encounters

[sum117]

Currently, players can flee from combat using their attack panel. We need to prevent this and improve the flee mechanic, especially for encounters with multiple enemies.

Tasks:

1. Remove the ability to flee using the attack panel.
2. Implement a new flee mechanic that requires a successful flee check against each enemy in multi-enemy encounters (e.g., 2v1).
3. Add a "Find" or "Search" button for enemies to use on their turn, allowing them to attempt to catch up with a fleeing character.

For example, in a 1v1 encounter, if the player successfully flees, they will escape from combat. However, in a 2v1 situation, the fleeing character must succeed in the flee check against both enemies. If the fleeing character is successful, enemies can use the "Find" button during their turn to try and catch up with the fleeing character.

Please implement these changes and let me know if you need any additional information or clarification.