fix(numba): Cast arguments to dot to float

Numba doesn't support dot with non-floating point arguments.

Author: aseyboldt

pytensor/link/numba/dispatch/basic.py

@@ -761,7 +761,9 @@ def specify_shape(x, {create_arg_string(shape_input_names)}):
 def int_to_float_fn(inputs, out_dtype):
     """Create a Numba function that converts integer and boolean ``ndarray``s to floats."""
 
-    if all(input.type.numpy_dtype == np.dtype(out_dtype) for input in inputs):
+    if all(
+        input.type.numpy_dtype == np.dtype(out_dtype) for input in inputs
+    ) and isinstance(np.dtype(out_dtype), np.floating):
 
         @numba_njit
         def inputs_cast(x):