Fixing healing light not being castable when user full hp (#10603)

* Fixing healing light not being castable on server and client sides when user has already full health

Adding integration test for spell cast of healing light when full health

Adding test for heal cast if user has full health

* Fixing ESLint syntax in the spells test files

website/common/script/content/spells.js

@@ -211,6 +211,7 @@ spells.healer = {
     target: 'self',
     notes: t('spellHealerHealNotes'),
     cast (user) {
+      if (user.stats.hp >= 50) throw new NotAuthorized(t('messageHealthAlreadyMax')(user.language));
       user.stats.hp += (statsComputed(user).con + statsComputed(user).int + 5) * 0.075;
       if (user.stats.hp > 50) user.stats.hp = 50;
     },