Disable unavailable subreddits after Reddit 404

apps/dashboard/src/features/settings/settings-sections.tsx

@@ -122,7 +122,7 @@ export function BehaviourSection({ config, draft, errors, onChange }: SectionPro
             ...draft,
             subreddits: [
               ...draft.subreddits,
-              { name: '', type: 'image', weight: '1', tone: 'default', scripted: '' },
+              { name: '', enabled: true, type: 'image', weight: '1', tone: 'default', scripted: '' },
             ],
           })}
           type="button"
@@ -157,6 +157,15 @@ export function BehaviourSection({ config, draft, errors, onChange }: SectionPro
                 <option value="image">Image</option><option value="chat">Chat</option>
               </select>
             </label>
+            <label className="toggle-field">
+              <input
+                aria-label={`Subreddit ${index + 1} enabled`}
+                checked={subreddit.enabled}
+                onChange={(event) => onChange(updateSubreddit(draft, index, { ...subreddit, enabled: event.target.checked }))}
+                type="checkbox"
+              />
+              <span><strong>Enabled</strong><small>Disabled subreddits are not polled.</small></span>
+            </label>
             <label className="settings-field">
               <span>Weight</span>
               <input