Update tropo_pyaps3.py

In the get_snwe function within tropo_pyaps3.py, the original return (S, N, W, E) was returning S, N, W, and E as NumPy's np.int64 type, while the expected type was standard Python's int. Therefore, I modified the return statement to return (int(S), int(N), int(W), int(E)), which successfully fixed the problem.

src/mintpy/tropo_pyaps3.py

@@ -318,8 +318,8 @@ def floor2multiple(x, step=10):
         W = floor2multiple(W, step=step)
         N = ceil2multiple(N, step=step)
         E = ceil2multiple(E, step=step)
-
-    return (S, N, W, E)
+    # modified by fukun 2025.2.14, return (S, N, W, E)->return (int(S), int(N), int(W), int(E))
+    return (int(S), int(N), int(W), int(E))
 
 
 def get_bounding_box(meta, geom_file=None):