Issue #3250629 by paulocs, longwave: MockBuilder::setMethods is deprecated in PHPUnit8 and removed from PHPUnit10

(cherry picked from commit 588951bbf2)

core/tests/Drupal/Tests/Component/Plugin/Context/ContextTest.php

@@ -103,7 +103,7 @@ class ContextTest extends TestCase {
    */
   public function testHasContextValue($has_context_value, $default_value): void {
     $mock_definition = $this->getMockBuilder('Drupal\Component\Plugin\Context\ContextDefinitionInterface')
-      ->setMethods(['getDefaultValue'])
+      ->onlyMethods(['getDefaultValue'])
       ->getMockForAbstractClass();
 
     $mock_definition->expects($this->atLeastOnce())