Update to Dart 3.7 and reformat with tall style

[parlough]

No description provided.

[parlough]

The one docker test will fail until that stable is updated to 3.7.

[domesticmouse]

LGTM, once CI is green

[domesticmouse]

Docker CI is upset?

Dockerfile:8
--------------------
   6 |     WORKDIR /app
   7 |     COPY pubspec.* ./
   8 | >>> RUN dart pub get
   [9](https://github.com/dart-lang/samples/actions/runs/13294088051/job/37121671121?pr=228#step:6:10) |     
  10 |     # Copy app source code and AOT compile it.
--------------------
ERROR: failed to solve: process "/bin/sh -c dart pub get" did not complete successfully: exit code: 1

[coveralls]

Pull Request Test Coverage Report for Build 13294088073

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 90.909%

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Totals
Change from base Build 12570372430:	0.0%
Covered Lines:	20
Relevant Lines:	22

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💛 - Coveralls

[auto-submit]

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