Ben Konyi 96624b69fb
[ Widget Preview ] Don't require 'flutter pub get' to be run in the root project (#178175)
Using the presence of `.dart_tool` in a project to determine if it's a
valid Flutter project is not correct as the directory will not exist if
`flutter pub get` has not yet been run.

Fixes https://github.com/flutter/flutter/issues/178052
2025-11-10 21:35:25 +00:00
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