Interpreter: Fix vector/matrix equality and inequality

Need to compare all elements, then fold the result to a single bool.

Change-Id: I0ebfaa9d518f29a782701246ada247cb55c01c2e
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/216607
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
3 files changed