[Bridge][Twig] Replace deprecated features
minor #11016 [Bridge][Twig] Replace deprecated features (egeloen)

This PR was submitted for the master branch but it was merged into the 2.3 branch instead (closes #11016).

Discussion
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[Bridge][Twig] Replace deprecated features

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | -
| License       | MIT
| Doc PR        | -

This PR replaces the deprecated classes `Twig_Function_Node` and `Twig_Function_Method` by the`Twig_SimpleFunction`.

Commits
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14a4e4d [Bridge][Twig] Replace deprecated features