Modify gastro acid to call onLose attributes when suppressing

src/data/move.ts

@@ -7635,11 +7635,12 @@ export class SuppressAbilitiesAttr extends MoveEffectAttr {
       return false;
     }
 
-    target.summonData.abilitySuppressed = true;
-    globalScene.arena.triggerWeatherBasedFormChangesToNormal();
-
     globalScene.queueMessage(i18next.t("moveTriggers:suppressAbilities", { pokemonName: getPokemonNameWithAffix(target) }));
 
+    target.suppressAbility();
+
+    globalScene.arena.triggerWeatherBasedFormChangesToNormal();
+
     return true;
   }
 

src/field/pokemon.ts

@@ -1498,6 +1498,14 @@ export default abstract class Pokemon extends Phaser.GameObjects.Container {
     applyOnGainAbAttrs(this, passive);
   }
 
+  /**
+   * Suppresses an ability and calls its onlose attributes
+   */
+  public suppressAbility() {
+    this.summonData.abilitySuppressed = true;
+    [ true, false ].forEach((v) => applyOnLoseAbAttrs(this, v));
+  }
+
   /**
    * Checks if a pokemon has a passive either from:
    *  - bought with starter candy

src/test/abilities/neutralizing_gas.test.ts

@@ -125,7 +125,7 @@ describe("Abilities - Neutralizing Gas", () => {
     expect(game.scene.arena.getTag(ArenaTagType.NEUTRALIZING_GAS)).toBeUndefined(); // No neut gas users are left
   });
 
-  it.todo("should deactivate when suppressed by gastro acid", async () => {
+  it("should deactivate when suppressed by gastro acid", async () => {
     game.override.enemyMoveset(Moves.GASTRO_ACID);
 
     await game.classicMode.startBattle([ Species.FEEBAS ]);