fix(sap_concur): stop swallowing upload response-read failures

The upload route caught every error from the bounded response read and
continued down the success path, so a size-limit breach or a stream
failure surfaced as an upstream success with a null or header-only body.

Concur returns Content-Length: 0 on a successful image-only upload, and
readResponseTextWithLimit already returns an empty string for that
without throwing, so dropping the catch keeps the legitimate empty-body
case working while letting real read failures reach the route's handler.

Author: waleedlatif1

apps/sim/app/api/tools/sap_concur/upload/route.ts

@@ -198,7 +198,7 @@ async function postMultipart(
   const raw = await readResponseTextWithLimit(response, {
     maxBytes: MAX_JSON_API_RESPONSE_BYTES,
     label: 'Concur upload response',
-  }).catch(() => '')
+  })
   let parsed: unknown = null
   if (raw.length > 0) {
     try {