Do not scale the size of bitmap in wxMSW Create(size, dc) overload

The size passed to Create() should be interpreted in the same way as the
size passed to CreateWithLogicalSize() and in wxMSW this means that it
should _not_ be scaled.

This makes the size of the bitmap returned by this function overload
consistent with wxDC::GetSize(), so it looks like the right thing to do,
even if it's a backwards-incompatible change.

Closes #24559.

tests/graphics/bitmap.cpp

@@ -1839,7 +1839,11 @@ TEST_CASE("Bitmap::ScaleFactor", "[bitmap][dc][scale]")
     // A bitmap "compatible" with this DC should also use the same scale factor.
     wxBitmap bmp2(4, 4, dc);
     CHECK( bmp2.GetScaleFactor() == 2 );
+#ifdef wxHAS_DPI_INDEPENDENT_PIXELS
     CHECK( bmp2.GetSize() == wxSize(8, 8) );
+#else
+    CHECK( bmp2.GetSize() == wxSize(4, 4) );
+#endif
 
     // A compatible bitmap created from wxImage and this DC should also inherit
     // the same scale factor, but its size should be still the same as that of