Revert "Do not append `!` to type names in tests that exercise NullabilitySuffix.none."

This reverts commit 890d12fa47c7b7b1ee5d45041e5d55f425d6fc75.

Reason for revert: Bot failures

Original change's description:
> Do not append `!` to type names in tests that exercise NullabilitySuffix.none.
> 
> Appending `!` is confusing because it suggests a non-nullable version
> of the type.  But the absence of a `?` or `*` suffix doesn't mean the
> type is non-nullable.  For type parameters, the type might or might
> permit null depending on how it is instantiated.
> 
> Change-Id: I3c98ddeb80816cc82e00e2692977e66c9fb51170
> Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/99373
> Reviewed-by: Dan Rubel <danrubel@google.com>
> Reviewed-by: Brian Wilkerson <brianwilkerson@google.com>
> Commit-Queue: Paul Berry <paulberry@google.com>

TBR=paulberry@google.com,scheglov@google.com,brianwilkerson@google.com,danrubel@google.com,mfairhurst@google.com

Change-Id: I5fe26d9d668dde4072ec0e4e25b9865a047bb817
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/99447
Reviewed-by: Paul Berry <paulberry@google.com>
Commit-Queue: Paul Berry <paulberry@google.com>
2 files changed
tree: 3371b14435b7d0b714bd6b4ab87431bdc5817a62
  1. .github/
  2. build/
  3. client/
  4. docs/
  5. pkg/
  6. runtime/
  7. samples/
  8. samples-dev/
  9. sdk/
  10. tests/
  11. third_party/
  12. tools/
  13. utils/
  14. .clang-format
  15. .gitattributes
  16. .gitconfig
  17. .gitignore
  18. .gn
  19. .mailmap
  20. .packages
  21. .vpython
  22. AUTHORS
  23. BUILD.gn
  24. CHANGELOG.md
  25. codereview.settings
  26. CONTRIBUTING.md
  27. DEPS
  28. LICENSE
  29. PATENTS
  30. PRESUBMIT.py
  31. README.dart-sdk
  32. README.md
  33. WATCHLISTS
README.md

Dart

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