[6.4] Verify assertBrowserHistoryIsNotOnLastPage is unavailable on browser-kit < 7.4

[TavoNiievez]

Companion to #58 (7.4) and #59 (8.1). The assertBrowserHistoryIsNotOnLastPage assertion from Codeception/module-symfony#240 requires symfony/browser-kit >= 7.4. On Symfony 6.4 that constraint class does not exist, so the step is intentionally unavailable and the module guards it.

This test pins that documented behaviour: calling the step throws PHPUnit\Framework\ExpectationFailedException carrying the requires symfony/browser-kit >= 7.4 message.

public function assertBrowserHistoryIsNotOnLastPageRequiresBrowserKit74(FunctionalTester $I)
{
    $I->amOnPage('/');

    try {
        $I->assertBrowserHistoryIsNotOnLastPage();
        $I->fail('assertBrowserHistoryIsNotOnLastPage should fail when symfony/browser-kit < 7.4.');
    } catch (ExpectationFailedException $e) {
        $I->assertStringContainsString('requires symfony/browser-kit >= 7.4', $e->getMessage());
    }
}

No composer.lock bump needed here — the assertion is unavailable on this branch, so it does not depend on lib-innerbrowser 4.1.1. Validated locally against Symfony 6.4 (browser-kit v6.4.32).