This fixes a crash that occurred when a `Http2Stream` write
is completed after it is already destroyed.
Instead, don’t destroy the stream in that case and wait for
GC to take over.
PR-URL: https://github.com/nodejs/node/pull/19002
Fixes: https://github.com/nodejs/node/issues/18973
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Anatoli Papirovski <apapirovski@mac.com>
