Fix persp check in SDFTControl::isSDFT().
Fix persp check in SDFTControl::isSDFT().

Now that ApproximateTransformedTextSize returns a reasonable value for
perspective matrices we might get a value out of it that falls in the
range for SDF text in general, which would escape the previous check
disabling perspective SDF.

Bug: skia:13684
Change-Id: Ia52de807ef1ab39fedcd7ae9a121d5ce4d91c695
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/574016
Reviewed-by: Herb Derby <9e12a3d2bbf73546e47cc9958f6ba8f3215b7eaf@google.com>
Commit-Queue: Jim Van Verth <509afb0bfbb23ecaaf1fb3323209f531b45e75a6@google.com>

google/skia,google/skia,google/skia,google/skia,google/skia,google/skia,google/skia,google/skia,google/skia,google/skia