BUG: wasilog - repeated group when using slog group attributes

[jamesstocktonj1]

Description

When using wasilog and slog the group attributes are repeated with each log call. This seems to be an issue with how the wasilog is implementing the slog.Handler as the repeated group can not be seen when using the native Go logger (e.g. var handler = slog.Default().Handler().WithAttrs(attr)).

Proof

Add the following code to a new template Go function (wash new).

var attr = []slog.Attr{
    slog.String("name", "foo"),
    slog.Group("nested", slog.String("bar", "baz")),
}
var handler = wasilog.DefaultOptions().NewHandler().WithAttrs(attr)
var logger = slog.New(handler)

logger.Info("Hello, World 1!")
logger.Info("Hello, World 2!")
logger.Info("Hello, World 3!")

When calling the function you get the following logs:

INFO <...> Hello, World 1! name="foo" nested.bar="baz"
INFO <...> Hello, World 2! name="foo" nested.nested.bar="baz"
INFO <...> Hello, World 3! name="foo" nested.nested.nested.bar="baz"