fix: only emit for_await_track_reactivity_loss in async mode

[Ocean-OS]

It turns out I didn't check if options.experimental.async was true when emitting for_await_track_reactivity_loss in #16521, this fixes that. Should help @gyzerok with #16610 for the time being.

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Latest commit: 3718921

The changes in this PR will be included in the next version bump.

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