Revert "Update Phaser to 3.80.0 beta 2"

This reverts commit 993ab264e7.

src/trainer.ts

@@ -20,6 +20,10 @@ export default class Trainer extends Phaser.GameObjects.Container {
     this.female = female;
     this.partyTemplateIndex = Math.min(partyTemplateIndex !== undefined ? partyTemplateIndex : Utils.randSeedWeightedItem(this.config.partyTemplates.map((_, i) => i)), 
       this.config.partyTemplates.length - 1);
+      
+    // TODO: Remove when Phaser weightedPick bug is fixed
+    if (isNaN(this.partyTemplateIndex))
+      this.partyTemplateIndex = this.config.partyTemplates.length - 1;
 
     console.log(Object.keys(trainerPartyTemplates)[Object.values(trainerPartyTemplates).indexOf(this.getPartyTemplate())]);