Fix aggregate PHP routing imports

[ousamabenyounes]

Fixes #3101.

Summary

• load profile, registration, resetting, and change-password routes from the routing configuration directory
• cover the aggregate PHP routing file through Symfony's bundle-aware routing loader

Test verification (RED → GREEN)

Before the production fix:

FOS\UserBundle\Tests\Routing\RoutingTest::testLoadAllRouting
TypeError: ... ContainerConfigurator, RoutingConfigurator given
ERRORS!
Tests: 33, Assertions: 91, Errors: 1.

After the fix:

OK (33 tests, 94 assertions)

Full local CI replay matched or improved the upstream baseline across PHP 8.2, 8.3, 8.4, 8.5, and Symfony 7.4:

Baseline: OK (145 tests, 407 assertions)
Branch:   OK (146 tests, 413 assertions)
PHP-CS-Fixer: Found 0 of 111 files that can be fixed
Diff coverage: 100% (4 changed lines, 0 missing)