Replace usage of State in package_manager tests with KeyValue

Problem/Motivation

Although #3584277: [random test failure] ComposerRequirementTest::testComposerInfoShown fixes a commonly occurring random fail in package_manager tests, grep shows a *lot* of other usage of State to control various stuff about package manager tests. These are are ripe for random failures, too. Let's convert all of them to KeyValue per the parent meta.

Steps to reproduce

git checkout main
cd core/modules/package_manager/tests
egrep -ir state -l | sort

Proposed resolution

Replace State with KeyValue. All of the following files inside core/modules/package_manager/tests match "state". They need investigation to rule out false positives, but it's an initial TODO list of things to check and possibly convert:

1. ./modules/fixture_manipulator/src/FixtureManipulator.php
2. ./modules/fixture_manipulator/src/StageFixtureManipulator.php
3. ./modules/package_manager_bypass/src/ComposerStagerExceptionTrait.php
4. ./modules/package_manager_bypass/src/LoggingBeginner.php
5. ./modules/package_manager_bypass/src/LoggingCommitter.php
6. ./modules/package_manager_bypass/src/LoggingDecoratorTrait.php
7. ./modules/package_manager_bypass/src/MockPathLocator.php
8. ./modules/package_manager_bypass/src/NoOpStager.php
9. ./modules/package_manager_bypass/src/PackageManagerBypassServiceProvider.php
10. ./modules/package_manager_test_validation/package_manager_test_validation.services.yml
11. ./modules/package_manager_test_validation/src/EventSubscriber/TestSubscriber.php
12. ./modules/package_manager_test_validation/src/PackageManagerTestValidationServiceProvider.php
13. ./modules/package_manager_test_validation/src/TestExecutableFinder.php See #3584277: [random test failure] ComposerRequirementTest::testComposerInfoShown
14. ./modules/package_manager_test_validation/src/TestSandboxDatabaseUpdatesValidator.php
15. ./src/Kernel/DirectWriteTest.php
16. ./src/Kernel/LockFileValidatorTest.php
17. ./src/Kernel/PackageManagerKernelTestBase.php
18. ./src/Kernel/PhpExtensionsValidatorTest.php
19. ./src/Kernel/ProjectInfoTest.php
20. ./src/Kernel/SandboxManagerBaseTest.php
21. ./src/Kernel/StageCommitExceptionTest.php
22. ./src/Traits/ComposerInstallersTrait.php

Remaining tasks

1. Review above list.
2. Any time "state" means the State service, convert to using KeyValue instead.
3. Open MR
4. Reviews / refinements
5. RTBC

User interface changes

Introduced terminology

API changes

Data model changes

Release notes snippet