Reverts "Roll Dart SDK from 139867e57ba9 to 88d311c9a531 (1 revision) (#54886)"

[auto-submit]

Reverts: #54886

Initiated by: zanderso

Reason for reverting: An issue with dart fix is failing the roll to the framework.

Original PR Author: skia-flutter-autoroll

Reviewed By: {fluttergithubbot}

This change reverts the following previous change:

https://dart.googlesource.com/sdk.git/+log/139867e57ba9..88d311c9a531

2024-08-30 [email protected] Version 3.6.0-199.0.dev

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/dart-sdk-flutter-engine
Please CC [email protected],[email protected] on the revert to ensure that a human
is aware of the problem.

To file a bug in Flutter Engine: 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

[flutter-dashboard]

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