Update PHPUnit data providers to be static for Drupal 11 and PHPUnit 10 compatibility.

See https://www.drupal.org/node/3421393.

assigned to @slucero

added 2 commits

• cc40dc7c - Fix additional static references in test providers.
• 844a7c4a - Replace event dispatcher class in testing.

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added 1 commit

• df477c4b - Remove leftover use statement.

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merged