Fix conformance testing

[mosuem]

Fix errors found on main branch.

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PR Health

Package publish validation ✔️

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Package	Version	Status
package:intl	0.19.0-dev	pre-release version (no publish necessary)
package:intl4x	0.6.1-wip	pre-release version (no publish necessary)
package:intl_translation	0.19.0-dev	pre-release version (no publish necessary)

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License Headers ✔️

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// Copyright (c) 2023, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

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no missing headers

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Unrelated files missing license headers

Files
pkgs/intl_translation/test/two_components/app_messages_all.dart
pkgs/intl_translation/test/two_components/app_messages_all_locales.dart
pkgs/intl_translation/test/two_components/component_messages_fr_xyz123.dart
pkgs/intl_translation/test/two_components/app_messages_fr.dart
pkgs/intl_translation/test/two_components/component_messages_all_locales.dart
pkgs/intl_translation/test/two_components/component_messages_all.dart
pkgs/intl_translation/test/generate_localized/code_map_messages_all.dart
pkgs/intl_translation/test/generate_localized/code_map_messages_all_locales.dart
pkgs/intl_translation/test/generate_localized/code_map_messages_fr.dart
pkgs/intl_translation/example/lib/generated/messages_iw.dart
pkgs/intl_translation/example/lib/generated/messages_de.dart
pkgs/intl_translation/example/lib/generated/messages_all_locales.dart
pkgs/intl_translation/example/lib/generated/messages_en.dart
pkgs/intl_translation/example/lib/generated/messages_all.dart
pkgs/intl_translation/example/lib/generated/messages_de_CH.dart
pkgs/intl_translation/example/lib/generated/messages_es.dart

Changelog Entry ✔️

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Package	Changed Files

Changes to files need to be accounted for in their respective changelogs.

Coverage ✔️

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