Andrew France ba86bebd4c Fix "always evaluate" for Logger anonymous function tuples (#15081) ...

Previously, when the configuration directive `always_evaluate_messages`
was set to true an exception was raised when a function that returns a
tuple was given to Logger:

  ```
  Logger.info(fn -> {"", []} end)
  ```

Would result in:

  ```
    ** (Protocol.UndefinedError) protocol String.Chars not implemented for Tuple

    Got value:

        {"", []}
  ```

2026-01-28 09:35:08 +01:00

..

logger

Do not crash on invalid metadata in deprecated backends, closes #14995

2025-12-04 11:57:49 +01:00

logger.ex

Fix "always evaluate" for Logger anonymous function tuples (#15081)

2026-01-28 09:35:08 +01:00