FIX: mixed is back

src/helpers.py

@@ -64,16 +64,7 @@ def is_mixed(text: str) -> bool:
         word = word.strip()
         if not word:
             continue
-        rus_counts = eng_counts = any_counts = 0
+        if any(e in ONLY_RUS_LETTERS for e in word) and any(e in ONLY_ENG_LETTERS for e in word):
-        for letter in word:
-            if letter in ONLY_RUS_LETTERS:
-                rus_counts += 1
-            elif letter in ONLY_ENG_LETTERS:
-                eng_counts += 1
-            elif letter not in SYMBOLS:
-                any_counts += 1
-            if (rus_counts > 0 and eng_counts > 0) or (rus_counts > 0 and any_counts > 0) or (
-                    eng_counts > 0 and any_counts > 0):
             return True
     return False