Re-enable Flutter SDK DAP for new versions

[DanTup]

• pkg/dds type error in .catchError callback leading to runtime errors dart-lang/sdk#50802 / Disable Flutter SDK DAP pending a fix for bug #4313
• "Inspect Widget" does not navigate to code in IDE when using new DAPs #4193

[DanTup]

@christopherfujino FYI, I'm re-enabling the SDK DAP experiment for Flutter >= 3.8.0-16.

This means:

• all Flutter pre-release users on >= 3.8.0-16 (which is the version I just got today) will begin using the SDK DAPs again
• if/when 3.8.0 (or later) goes stable, 10% of users will begin using the SDK DAPs (this number will begin increasing after the next stable release as long as there aren't significant issues reported)

Please let me know if you hear of any issues that may be related. Ideally if there are any remaining issues that would affect enabling this for stable users, pre-release users will find them in time to be fixed before the next stable branch.

[christopherfujino]

@christopherfujino FYI, I'm re-enabling the SDK DAP experiment for Flutter >= 3.8.0-16.

This means:

• all Flutter pre-release users on >= 3.8.0-16 (which is the version I just got today) will begin using the SDK DAPs again
• if/when 3.8.0 (or later) goes stable, 10% of users will begin using the SDK DAPs (this number will begin increasing after the next stable release as long as there aren't significant issues reported)

Please let me know if you hear of any issues that may be related. Ideally if there are any remaining issues that would affect enabling this for stable users, pre-release users will find them in time to be fixed before the next stable branch.

SGTM, thanks for the heads up!

[DanTup]

FYI, I'm reverting the above and bumping it back a bit more because of #4413 (the new ToolEvent stream isn't supported by DWDS meaning there are issues with web).

I'm re-opening this to re-do once that's fixed.