VIVA SDK TT v3 support (#4252)

* VIVA SDK TT v3 support

* Format fix.

* Renamed the API naming, removed '3' from the name.

* Implementation of User turn start strategy using Krisp VIVA Interruption Prediction in scope of TT v3 support.

* Typo fix in voice-krisp-viva example to use KrispVivaFilter class

* style fix.

* test run error fixes.

* some test related changes.

* Fixed tests

* Stule fixes.

tests/test_krisp_sdk_manager.py

@@ -62,8 +62,15 @@ class TestKrispVivaSDKManager:
     def setup_method(self):
         """Reset mocks and SDK state before each test."""
         mock_krisp_audio.reset_mock()
+        mock_krisp_audio.globalInit.side_effect = None
         mock_krisp_audio.getVersion.return_value = mock_version
 
+        # Ensure krisp_instance module uses THIS test's mock, not a stale
+        # reference cached from a different test file's sys.modules entry.
+        import pipecat.audio.krisp_instance as _ki
+
+        _ki.krisp_audio = mock_krisp_audio
+
         # Reset the SDK manager state for clean tests
         # We access internal state to ensure tests are isolated
         with KrispVivaSDKManager._lock: