Language codes for Hebrew (#93681)

* Language codes for Hebrew

There is 2 optional code for Hebrew:
he-IL is the new code
iw-IL is the old code , the google cloud STT for example is using the old code (iw)

* Update language.py

* Update test_language.py

* Update test_language.py

* Update test_language.py

* Simplify duplicate language check

---------

Co-authored-by: Paulus Schoutsen <balloob@gmail.com>

tests/util/test_language.py

@@ -226,3 +226,39 @@ def test_no_nb_prefer_exact_regions() -> None:
         "no-AA",
         ["en-US", "en-GB", "no-AA", "nb-AA"],
     ) == ["no-AA", "nb-AA"]
+
+
+def test_he_iw_same() -> None:
+    """Test that the he/iw are interchangeable."""
+    assert language.matches(
+        "he",
+        ["en-US", "en-GB", "iw"],
+    ) == ["iw"]
+    assert language.matches(
+        "iw",
+        ["en-US", "en-GB", "he"],
+    ) == ["he"]
+
+
+def test_he_iw_prefer_exact() -> None:
+    """Test that the exact language is preferred even if an interchangeable language is available."""
+    assert language.matches(
+        "he",
+        ["en-US", "en-GB", "iw", "he"],
+    ) == ["he", "iw"]
+    assert language.matches(
+        "he",
+        ["en-US", "en-GB", "he", "iw"],
+    ) == ["he", "iw"]
+
+
+def test_he_iw_prefer_exact_regions() -> None:
+    """Test that the exact language/region is preferred."""
+    assert language.matches(
+        "he-IL",
+        ["en-US", "en-GB", "iw-IL", "he-IL"],
+    ) == ["he-IL", "iw-IL"]
+    assert language.matches(
+        "he-IL",
+        ["en-US", "en-GB", "he-IL", "iw-IL"],
+    ) == ["he-IL", "iw-IL"]