Fix type of array from beamline testing (#937)

* Fix type of array from beamline testing

* Update method signatures to agree with pv data type

---------

Co-authored-by: Robert Tuck <robert.tuck@diamond.ac.uk>

src/dodal/devices/oav/pin_image_recognition/__init__.py

@@ -61,7 +61,7 @@ def __init__(self, prefix: str, name: str = ""):
         self.triggered_bottom_edge, self._bottom_edge_setter = soft_signal_r_and_setter(
             Array1D[np.int32], name="triggered_bottom_edge"
         )
-        self.array_data = epics_signal_r(Array1D[np.uint8], f"pva://{prefix}PVA:ARRAY")
+        self.array_data = epics_signal_r(np.ndarray, f"pva://{prefix}PVA:ARRAY")
 
         # Soft parameters for pin-tip detection.
         self.preprocess_operation = soft_signal_rw(int, 10, name="preprocess")
@@ -99,9 +99,7 @@ def _set_triggered_values(self, results: SampleLocation):
         self._top_edge_setter(results.edge_top)
         self._bottom_edge_setter(results.edge_bottom)
 
-    async def _get_tip_and_edge_data(
-        self, array_data: Array1D[np.uint8]
-    ) -> SampleLocation:
+    async def _get_tip_and_edge_data(self, array_data: np.ndarray) -> SampleLocation:
         """
         Gets the location of the pin tip and the top and bottom edges.
         """