fix(xo-server/installPatches): fix pool wide detection

Introduced by 3f1c41a

Fixes zammad#6819 zammad#6781 zammad#6827

In #6186 the behavior was changed to always pass hosts, which broke the pool wide detection.

packages/xo-server/src/api/pool.mjs

@@ -116,13 +116,15 @@ listMissingPatches.resolve = {
 // -------------------------------------------------------------------
 
 export async function installPatches({ pool, patches, hosts }) {
+  const opts = { patches }
   let xapi
   if (pool !== undefined) {
     pool = this.getXapiObject(pool, 'pool')
     xapi = pool.$xapi
     hosts = Object.values(xapi.objects.indexes.type.host)
   } else {
     hosts = hosts.map(_ => this.getXapiObject(_))
+    opts.hosts = hosts
     xapi = hosts[0].$xapi
     pool = xapi.pool
   }
@@ -136,7 +138,7 @@ export async function installPatches({ pool, patches, hosts }) {
     })
   }
 
-  await xapi.installPatches({ hosts, patches })
+  await xapi.installPatches(opts)
 
   const masterRef = pool.master
   if (moveFirst(hosts, _ => _.$ref === masterRef)) {