Use bracket notation to access cubic resampler properties

The dot notation property names are not being preserved due to minifcation.

See https://github.com/flutter/flutter/issues/102657

Change-Id: I6ee015e5d6fecebfb287159250ae36ca4117dae3
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/571201
Reviewed-by: Kevin Lubick <kjlubick@google.com>
1 file changed