logs: fix pagination of logs / user logs pages

[imrehg]

Flask-SQLAlchemy <3.0.0 allowed positional arguments for .paginate while 3.0.0 made all those arguments keyword only. This change adds the previously implict keywords to be explicit.

The previous pattern from the last 2.x version is here: https://github.com/pallets-eco/flask-sqlalchemy/blob/2.5.1/flask_sqlalchemy/__init__.py#L473-L492

    def paginate(self, page=None, per_page=None, error_out=True, max_per_page=None):

This means that the existign MAX_ENTRIES_PER_PAGE argument is a bit misleading, as it was was previously passed to per_page rather than the max_per_page argument. In this PR that behaviour is preserved to be conservative, but the intention is likely to change user.py to pass that argument to the max_per_page argument as the name intends?

The current format is here: https://github.com/pallets-eco/flask-sqlalchemy/blob/3.1.1/src/flask_sqlalchemy/query.py#L63-L97 showing that with 3.0 "All parameters are keyword-only."

    def paginate(
        self,
        *,
        page: int | None = None,
        per_page: int | None = None,
        max_per_page: int | None = None,
        error_out: bool = True,
        count: bool = True,
    )

Closes #225