Use correct Google Translate AutoML locale (mozilla#3060)

For locales that use the same locale code in Google Translate (e.g. es-AR and es-ES both use es),
we now use the correct locale code in Machinery Google Translate if AutoML is enabled.

pontoon/machinery/tests/test_views.py

@@ -84,7 +84,7 @@ def test_view_google_translate(
         m.post("https://translation.googleapis.com/language/translate/v2", json=data)
         response = member.client.get(
             url,
-            {"text": "text", "locale": google_translate_locale.google_translate_code},
+            {"text": "text", "locale": google_translate_locale.code},
         )
 
     assert response.status_code == 200

pontoon/machinery/views.py

@@ -156,16 +156,12 @@ def google_translate(request):
     """Get translation from Google machine translation service."""
     try:
         text = request.GET["text"]
-        locale_code = request.GET["locale"]
-
-        if not locale_code:
-            raise ValueError("Locale code is empty")
+        locale = Locale.objects.get(code=request.GET["locale"])
 
-        locale = Locale.objects.filter(google_translate_code=locale_code).first()
-        if not locale:
+        if not locale.google_translate_code:
             raise ValueError("Locale code not supported")
 
-    except (MultiValueDictKeyError, ValueError) as e:
+    except (Locale.DoesNotExist, MultiValueDictKeyError, ValueError) as e:
         return JsonResponse(
             {"status": False, "message": f"Bad Request: {e}"},
             status=400,

translate/src/api/machinery.ts

@@ -128,7 +128,7 @@ export async function fetchGoogleTranslation(
   const url = '/google-translate/';
   const params = {
     text: original,
-    locale: locale.googleTranslateCode,
+    locale: locale.code,
   };
 
   const { translation } = (await GET_(url, params)) as {