Two unit tests should extend RulesUnitTestBase not UnitTestCase

All of the Rules Unit tests extend either RulesUnitTestBase, RulesIntegrationTestBase or RulesEntityIntegrationTestBase ... apart from two which extend UnitTestCase directly: tests/src/Unit/RulesDebugLoggerChannelTest.php and tests/src/Unit/ConditionExpressionTest.php

This is probably an oversight/accident, and it causes problems when adding temporary global debug to the the base class files, because these two test classes remain unaffected, and hence can fail. It would be good to have these two consistent with the rest.