fix(federation): compute relay targets before member deletion in leave handler

getGroupDmTargetOrigins() was called after the leaving user's dm_members row
was deleted, causing their instance to be excluded from member_remove and
ownership_transfer relay fan-out if they were the only member from that peer.
Move the target origins and leaving user lookups to before the deletion.

packages/web/src/components/modals/settingsPanels/KeybindsPanel.tsx

@@ -286,6 +286,7 @@ export function KeybindsPanel() {
 
   return (
     <div className="space-y-5">
+      <h2 className="text-lg font-semibold text-txt-primary mb-6">Keybinds</h2>
       {/* macOS Accessibility Warning */}
       {isElectronMac() && accessibilityTrusted === false && (
         <div className="rounded-lg bg-amber-500/10 border border-amber-500/20 p-3.5">