[DependencyInjection] Avoid call_user_func in dumped containers.

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | -
| License       | MIT
| Doc PR        | -

This is the second commit from  #9432.

When using static methods for either the factory or as the configurator we can avoid using call_user_func and directly use the class:method notation. This is faster (about 5 times, but we're talking milliseconds here) but I think the resulting code is also much easier to read.

The code to use call_user_func has to remain in PhpDumper because in the uncompiled container they still get used.