Fix S32_D32_constX_shaderproc assert
Fix S32_D32_constX_shaderproc assert

After https://crrev.com/1642273002, fFilterOneY includes a rounding bias
which is not accounted for in the debug-mode S32_D32_constX_shaderproc
check.

Update the S32_D32_constX_shaderproc assert to use the (biased)
SkBitmapProcStateAutoMapper utility.

GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1655823002
R=reed@google.com
BUG=skia:4874

Review URL: https://codereview.chromium.org/1655823002

Hikari-no-Tenshi/android_external_skia,tmpvar/skia.cc,Hikari-no-Tenshi/android_external_skia,aosp-mirror/platform_external_skia,aosp-mirror/platform_external_skia,HalCanary/skia-hc,qrealka/skia-hc,google/skia,aosp-mirror/platform_external_skia,Hikari-no-Tenshi/android_external_skia,tmpvar/skia.cc,HalCanary/skia-hc,google/skia,google/skia,rubenvb/skia,HalCanary/skia-hc,qrealka/skia-hc,qrealka/skia-hc,Hikari-no-Tenshi/android_external_skia,aosp-mirror/platform_external_skia,HalCanary/skia-hc,google/skia,qrealka/skia-hc,aosp-mirror/platform_external_skia,tmpvar/skia.cc,google/skia,aosp-mirror/platform_external_skia,aosp-mirror/platform_external_skia,Hikari-no-Tenshi/android_external_skia,HalCanary/skia-hc,rubenvb/skia,rubenvb/skia,aosp-mirror/platform_external_skia,rubenvb/skia,rubenvb/skia,google/skia,tmpvar/skia.cc,rubenvb/skia,qrealka/skia-hc,tmpvar/skia.cc,google/skia,tmpvar/skia.cc,HalCanary/skia-hc,tmpvar/skia.cc,google/skia,Hikari-no-Tenshi/android_external_skia,Hikari-no-Tenshi/android_external_skia,aosp-mirror/platform_external_skia,rubenvb/skia,qrealka/skia-hc,rubenvb/skia,tmpvar/skia.cc,tmpvar/skia.cc,aosp-mirror/platform_external_skia,HalCanary/skia-hc,rubenvb/skia,google/skia,rubenvb/skia,qrealka/skia-hc,google/skia,Hikari-no-Tenshi/android_external_skia,qrealka/skia-hc,HalCanary/skia-hc,HalCanary/skia-hc,HalCanary/skia-hc