Fix incorrect scope on checking files to load in translations (#112457)

discovered in https://github.com/home-assistant/core/pull/112295#discussion_r1513505710

We only checked if the last language had files to load
instead of all of them. The checks for each language
are the same because the only reason we would skip
a language is a missing/broken integration or the integration
is a single file. Both of these loop conditions are always
the same reguardless of the language so the check worked

homeassistant/helpers/translation.py

@@ -162,13 +162,14 @@ async def _async_get_component_strings(
     translations_by_language: dict[str, dict[str, Any]] = {}
     # Determine paths of missing components/platforms
     files_to_load_by_language: dict[str, dict[str, str]] = {}
+    has_files_to_load = False
     for language in languages:
         files_to_load: dict[str, str] = {}
         files_to_load_by_language[language] = files_to_load
         translations_by_language[language] = {}
 
-        for loaded in components:
-            domain, _, platform = loaded.partition(".")
+        for comp in components:
+            domain, _, platform = comp.partition(".")
             if not (integration := integrations.get(domain)):
                 continue
 
@@ -179,10 +180,11 @@ async def _async_get_component_strings(
                 # them.
                 continue
 
-            if path := component_translation_path(loaded, language, integration):
-                files_to_load[loaded] = path
+            if path := component_translation_path(comp, language, integration):
+                files_to_load[comp] = path
+                has_files_to_load = True
 
-    if not files_to_load:
+    if not has_files_to_load:
         return translations_by_language
 
     # Load files

tests/helpers/test_translation.py

@@ -541,6 +541,37 @@ async def test_ensure_translations_still_load_if_one_integration_fails(
     assert translations == sensor_translations
 
 
+async def test_load_translations_all_integrations_broken(
+    hass: HomeAssistant, caplog: pytest.LogCaptureFixture
+) -> None:
+    """Ensure we do not try to load translations again if the integration is broken."""
+    hass.config.components.add("broken")
+    hass.config.components.add("broken2")
+
+    with patch(
+        "homeassistant.helpers.translation.async_get_integrations",
+        return_value={
+            "broken2": Exception("unhandled failure"),
+            "broken": Exception("unhandled failure"),
+        },
+    ):
+        translations = await translation.async_get_translations(
+            hass, "en", "entity_component", integrations={"broken", "broken2"}
+        )
+    assert "Failed to load integration for translation" in caplog.text
+    assert "broken" in caplog.text
+    assert "broken2" in caplog.text
+    assert not translations
+    caplog.clear()
+
+    translations = await translation.async_get_translations(
+        hass, "en", "entity_component", integrations={"broken", "broken2"}
+    )
+    assert not translations
+    # Ensure we do not try again
+    assert "Failed to load integration for translation" not in caplog.text
+
+
 async def test_caching(hass: HomeAssistant) -> None:
     """Test we cache data."""
     hass.config.components.add("sensor")