nrslog.WithTransactionFromContext does not work after slog.With

[moenth]

Description

When creating a slog.Logger using nrslog.WithTransactionFromContext transaction contexts stops being propagated after calling With on the resulting logger. This is because TransactionFromContextHandler does not implement its own WithAttrs and WithGroup functions which means they are delegated to the underlying NRHandler. Thus TransactionFromContextHandler is removed from the handler stack after calling either of these functions.

Steps to Reproduce

handler := nrslog.TextHandler(app, os.Stdout, &slog.HandlerOptions{})
logger := slog.New(nrslog.WithTransactionFromContext(handler))
appLogger := logger.With(slog.String("component", "app"))

tx := app.StartTransaction("test")
ctx := newrelic.NewContext(context.Background(), tx)

logger.InfoContext(ctx, "has transaction context")
appLogger.InfoContext(ctx, "does not have transaction context")

Expected Behavior

Transaction context is propagated after using slog.With.

NR Diag results

Your Environment

Reproduction case

Additional context

[iamemilio]

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