If an alert is silenced than there is still the silence button

[geisslet]

this button should open the silence in alertmanager and not give the option to create a new silence

the silence id should be available in the alert:
"status": {
"state": "suppressed",
"silencedBy": [
"0d9bd06d-a432-42ef-910e-b22e4f49e91c"
],
"inhibitedBy": null
},

This also would make the maintenance silence view obsolete.