fix(symfony): avoid deprecated translation command probe

[tacman]

Fixes #8626.

On Symfony 8.2, API Platform's object-mapper feature probe autoloads the deprecated FrameworkBundle TranslationExtractCommand shim. Probe the command's new Translation component namespace first, retaining the old FrameworkBundle class as a short-circuit fallback for earlier Symfony releases. Keep the existing object-mapper availability checks.

The regression test runs in a separate process, loads the real extension, verifies object-mapper metadata registration, and asserts the deprecated class was not loaded. It fails before the fix and passes afterward.

Validation using Symfony 8.2-dev dependencies:

• The new regression and common-configuration tests pass: 2 tests, 68 assertions.
• Running the complete extension test class gives 19 passing tests and one existing failure in testSwaggerUiDisabledConfiguration (Swagger UI processor remains registered). That same failure reproduces with the unchanged upstream extension; it is not suppressed or changed here.
• Both changed PHP files pass syntax checks; git diff --check passes.