feat(xo-web): prevent XO from listing missing patches on halted XCP-ng hosts

Otherwise it triggers a lot of errors on XCP-ng

CHANGELOG.unreleased.md

@@ -8,6 +8,7 @@
 > Users must be able to say: “Nice enhancement, I'm eager to test it”
 
 - [Backup] Better resolution of the "last run log" quick access (PR [#5141](https://github.com/vatesfr/xen-orchestra/pull/5141))
+- [Patches] Don't check patches on halted XCP-ng hosts (PR [#5140](https://github.com/vatesfr/xen-orchestra/pull/5140))
 
 ### Bug fixes
 

packages/xo-web/src/common/xo/index.js

@@ -821,6 +821,9 @@ export const getHostMissingPatches = async host => {
       ? patches
       : filter(patches, { paid: false })
   }
+  if (host.power_state !== 'Running') {
+    return []
+  }
   try {
     return await _call('pool.listMissingPatches', { host: hostId })
   } catch (_) {