Update CHW DWCONV to pass in input_height and not output_height.

Some fixes to the implicitly padded DW NCHW kernels.

Update NCHW Convolution tests - padding instead of padding_width

PiperOrigin-RevId: 310887885
diff --git a/src/xnnpack/dwconv.h b/src/xnnpack/dwconv.h
index b7ee677..5648d54 100644
--- a/src/xnnpack/dwconv.h
+++ b/src/xnnpack/dwconv.h
@@ -209,8 +209,8 @@
 
 #define DECLARE_F32_DWCONV_SPCHW_UKERNEL_FUNCTION(fn_name) \
   XNN_INTERNAL void fn_name(                               \
-    size_t m,                                              \
-    size_t n,                                              \
+    size_t input_height,                                   \
+    size_t input_width,                                    \
     const float* input,                                    \
     const float* weights,                                  \
     const float* zero,                                     \