perf: improve async op santizer speed and accuracy (#20501)

This commit improves async op sanitizer speed by only delaying metrics
collection if there are pending ops. This
results in a speedup of around 30% for small CPU bound unit tests.

It performs this check and possible delay on every collection now,
fixing an issue with parent test leaks into steps.

1 files changed, 3 insertions, 0 deletions

diff --git a/ext/fetch/26_fetch.js b/ext/fetch/26_fetch.js
index 311a197a8..f1c771dc0 100644
--- a/ext/fetch/26_fetch.js
+++ b/ext/fetch/26_fetch.js
@@ -284,6 +284,9 @@ async function mainFetch(req, recursive, terminator) {
         cause: requestSendError,
       });
     }
+    if (requestBodyRid !== null) {
+      core.tryClose(requestBodyRid);
+    }
     throw err;
   } finally {
     if (cancelHandleRid !== null) {