IBX-12654: Fixed dynamic calls to static methods

[bnowak]

🎫 Issue	IBX-12654

Related PRs:

• IBX-12654: Enabled the PHPStan strict rule for dynamic calls to static methods phpstan#16

Description:

Replaces dynamic calls to static methods ($this->assertX(), static test helpers, ...) with self::/ClassName:: calls: 57 calls in 11 files. The staticMethod.dynamicCall strict rule itself is enabled in the linked ibexa/phpstan PR; this PR keeps CI green once that is released.

51 of the 57 calls are $this->assertSame()/$this->assertEquals() used inside willReturnCallback() closures (php-cs-fixer's php_unit_test_case_static_method_calls rule does not rewrite calls inside closures, so these were fixed by hand); converting them to self:: let php-cs-fixer's static_lambda rule additionally mark 7 of those closures as static function, since they no longer capture $this. The remaining 6 calls are the package's own concrete static test helpers (createVersionInfo, createArgumentMetadata, createLocation, generateUser) called via $this-> instead of self::.

Pre-existing, unrelated CI failure: the "MySQL integration tests" and "PostgreSQL integration tests" jobs fail with Call to undefined method JMS\TranslationBundle\Translation\Comparison\ChangeSet::getChangedMessages() in TranslationTest::testTranslation. This is caused by ibexa/core (IBX-12594) bumping ibexa/jms-translation-bundle to the 3.0 fork while admin-ui itself still requires upstream jms/translation-bundle ^2.4 directly; both classes autoload under the same namespace. This diff does not touch composer.json or any translation-related code (see the file list above), so it is not the cause. All other checks (PHPStan, code style, rector, deptrac, browser tests, SonarCloud, base-branch check) are green.

For QA:

No functional change. CI (PHPStan, code style, unit tests) is the verification.

Documentation:

No client-facing impact.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

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