docs: connection churn

Author: nbbeeken

src/mongo_types.ts

@@ -481,6 +481,11 @@ export type Abortable = {
    *
    * The `signal.reason` value is used as the error thrown.
    *
+   * @remarks
+   * **NOTE:** Currently, aborting an in-progress operation causes the in-use Connection to close.
+   * If signals are aborted at a high rate it will cause many connections that are otherwise healthy
+   * to be discarded. We plan to mitigate this in a future release, please follow NODE-6062.
+   *
    * @example
    * ```js
    * const controller = new AbortController();