Ask with Unraid's own dialog, not the browser's

Every confirm() and prompt() in the plugin could be switched off from inside itself — one tick of
"prevent this page from creating additional dialogs" and all 32 of them returned false while
drawing nothing, across every tab, until a full reload. swal is already global on every webGUI
page and core uses it 370 times without a single confirm(), so this costs no new dependency.

vvConfirmRun() is the one that mattered: it returned a boolean to three callers testing !it, and
an unawaited promise is always truthy, so leaving those alone would have run every job without
asking. The wrapper's callback is a classic function expression on purpose — SweetAlert only
calls back on cancel when the callback's own source declares a parameter, and an arrow would
have hung the promise forever.

Plugin/unraid/pages/rsync.php

@@ -1481,10 +1481,10 @@ function vvRpSave() {
     .catch(() => { btn.disabled = false; btn.textContent = 'Save Profile'; fb.style.color='#ef5350'; fb.textContent='Request failed'; });
 }
 
-function vvRpDelete() {
+async function vvRpDelete() {
   const name = document.getElementById('vv-rp-name').value.trim();
   if (!name) return;
-  if (!confirm(`Delete profile "${name}"?\n\nThis removes it from all PROFILE_* arrays in master.conf.`)) return;
+  if (!await vvConfirm(`Delete profile "${name}"?\n\nThis removes it from all PROFILE_* arrays in master.conf.`)) return;
 
   const fb  = document.getElementById('vv-rp-fb');
   const del = document.getElementById('vv-rp-del-btn');