Roll Skia from 56a10bf56ee0 to da9b8fb01101 (5 revisions) (flutter#177928)

https://skia.googlesource.com/skia.git/+log/56a10bf56ee0..da9b8fb01101

2025-11-03 michaelludwig@google.com [graphite] Refactor helper function
for local matrix shader block adding
2025-11-03 michaelludwig@google.com Add predefined encoded origin
inverse function
2025-11-03 kjlubick@google.com Port tests to explicitly
serialize/deserialize images in SkPictures
2025-11-03 kjlubick@google.com Fix fuzzer targets and subsequent
bitrotting
2025-11-03 skia-autoroll@skia-public.iam.gserviceaccount.com Roll
vulkan-deps from 2d7962129e3b to fd4a777ae606 (1 revision)

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/skia-flutter-autoroll
Please CC bwils@google.com,jsimmons@google.com,kjlubick@google.com on
the revert to ensure that a human
is aware of the problem.

To file a bug in Skia: https://bugs.chromium.org/p/skia/issues/entry
To file a bug in Flutter:
https://github.com/flutter/flutter/issues/new/choose

To report a problem with the AutoRoller itself, please file a bug:
https://issues.skia.org/issues/new?component=1389291&template=1850622

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+doc/main/autoroll/README.md

Author: engine-flutter-autoroll

DEPS

@@ -15,7 +15,7 @@ vars = {
   'flutter_git': 'https://flutter.googlesource.com',
   'skia_git': 'https://skia.googlesource.com',
   'llvm_git': 'https://llvm.googlesource.com',
-  'skia_revision': '56a10bf56ee0f5cdc7132fdcdc2b9f16234c8967',
+  'skia_revision': 'da9b8fb01101e21471dd66ed77345abb579599be',
 
   # WARNING: DO NOT EDIT canvaskit_cipd_instance MANUALLY
   # See `lib/web_ui/README.md` for how to roll CanvasKit to a new version.