feat(server): improve private key and cloud link flows

Add server private key generation from the dropdown, prevent deleting
private keys that are still in use, and close cloud provider link modals
after successful linking.

resources/views/components/forms/button.blade.php

@@ -1,4 +1,4 @@
-@if ($authDisabled)
+@if ($authDisabled || filled($tooltip))
 <span class="relative inline-flex"
     x-data="{ visible: false, _t: null }"
     @mouseenter="_t = setTimeout(() => {
@@ -39,9 +39,9 @@
         @endif
     @endif
 </button>
-@if ($authDisabled)
+@if ($authDisabled || filled($tooltip))
     <div x-ref="tip" x-show="visible" x-cloak class="auth-tooltip">
-        You do not have permission to perform this action.
+        {{ $tooltip ?: 'You do not have permission to perform this action.' }}
     </div>
 </span>
 @endif