fix(bec-processed-signal): fix read on processed signal, will force a read on linked signal now

tests/test_processed_signal.py

@@ -2,6 +2,8 @@
 
 # pylint: disable=redefined-outer-name
 
+from unittest import mock
+
 import pytest
 from bec_server.device_server.tests.utils import DMMock
 from ophyd import Component as Cpt
@@ -121,6 +123,13 @@ def test_processed_signal_describe_metadata(processed_signal_from_device_manager
     assert "samy.readback" in info["method_inputs"]
 
 
+def test_processed_signal_forces_read(processed_signal_from_device_manager, samx):
+    """Test that get() forces read of all input signals."""
+    with mock.patch.object(samx.readback, "read") as mock_read:
+        processed_signal_from_device_manager.read()
+        mock_read.assert_called_once()
+
+
 def test_processed_signal_model_rejects_missing_required_inputs():
     """Test compute model validation when required kwargs are missing."""