In PayPal collect invoices script: Update throw unsuccessful invoices collections (#18572)

* Remove throw on `INVOICES_COLLECTED_SUCCESS.length === 0`

Effectively reverts https://github.com/overleaf/internal/pull/18310/commits/038377b511c56fab24959ce99b6f2c7d6429c282

See: https://digital-science.slack.com/archives/C20TZCMMF/p1716973110408049

* Update tests so they don't expect rejections

* Reject when some invoice collection failed

GitOrigin-RevId: aa37f7fa37c96b8624e87d94be675d115e3250a9

services/web/scripts/recurly/collect_paypal_past_due_invoice.js

@@ -91,8 +91,9 @@ const main = async () => {
   try {
     await attemptInvoicesCollection()
 
-    if (INVOICES_COLLECTED_SUCCESS.length === 0) {
-      throw new Error('No invoices collected')
+    const diff = INVOICES_COLLECTED.length - INVOICES_COLLECTED_SUCCESS.length
+    if (diff !== 0) {
+      throw new Error(`Invoices collection failed for ${diff} invoices`)
     }
 
     return {