fix: poll multiple-choice toggle + Sentry JAVASCRIPT-REACT-N

PollCreator: replace maxSelections/options.length stale-closure pattern
with isMultiple: boolean state. max_selections computed from filledOptions
at submit time. Radio inputs replaced with styled toggle buttons that
visually highlight the active selection.

PollContent: catch getPendingEvents error (Sentry JAVASCRIPT-REACT-N).
SDK throws Cannot call getPendingEvents with pendingEventOrdering ==
chronological when sending poll vote events with m.reference relation.
Silently catch so optimistic UI update stands — vote will retry on next
sync if needed.

Fixes JAVASCRIPT-REACT-N

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/app/components/message/content/PollContent.tsx

@@ -203,12 +203,12 @@ export function PollContent({
       mx.sendEvent(roomId, 'm.poll.response' as any, {
         'm.relates_to': { rel_type: 'm.reference', event_id: eventId },
         'm.selections': [answerId],
-      });
+      }).catch(() => undefined);
     } else {
       mx.sendEvent(roomId, 'org.matrix.msc3381.poll.response' as any, {
         'm.relates_to': { rel_type: 'm.reference', event_id: eventId },
         'org.matrix.msc3381.poll.response': { answers: [answerId] },
-      });
+      }).catch(() => undefined);
     }
   };
 

src/app/features/room/PollCreator.tsx

@@ -13,7 +13,7 @@ export function PollCreator({ roomId, onClose }: PollCreatorProps) {
   const mx = useMatrixClient();
   const [question, setQuestion] = useState('');
   const [options, setOptions] = useState<string[]>(['', '']);
-  const [maxSelections, setMaxSelections] = useState<number>(1);
+  const [isMultiple, setIsMultiple] = useState(false);
   const [submitting, setSubmitting] = useState(false);
   const [error, setError] = useState<string | null>(null);
 
@@ -54,7 +54,7 @@ export function PollCreator({ roomId, onClose }: PollCreatorProps) {
         'm.poll': {
           question: { 'm.text': trimmedQuestion },
           answers: filledOptions.map((o, i) => ({ 'm.id': `${i}`, 'm.text': o })),
-          max_selections: maxSelections,
+          max_selections: isMultiple ? filledOptions.length : 1,
           kind: 'm.poll.undisclosed',
         },
         body: trimmedQuestion,
@@ -196,42 +196,29 @@ export function PollCreator({ roomId, onClose }: PollCreatorProps) {
         <div style={{ display: 'flex', flexDirection: 'column', gap: config.space.S100 }}>
           <Text size="L400">Selection Type</Text>
           <div style={{ display: 'flex', gap: config.space.S200 }}>
-            <label
-              style={{
-                display: 'flex',
-                alignItems: 'center',
-                gap: config.space.S100,
-                cursor: 'pointer',
-                fontSize: '14px',
-                color: 'var(--tc-surface-high)',
-              }}
-            >
-              <input
-                type="radio"
-                name="pollType"
-                checked={maxSelections === 1}
-                onChange={() => setMaxSelections(1)}
-              />
-              Single choice
-            </label>
-            <label
-              style={{
-                display: 'flex',
-                alignItems: 'center',
-                gap: config.space.S100,
-                cursor: 'pointer',
-                fontSize: '14px',
-                color: 'var(--tc-surface-high)',
-              }}
-            >
-              <input
-                type="radio"
-                name="pollType"
-                checked={maxSelections !== 1}
-                onChange={() => setMaxSelections(options.length)}
-              />
-              Multiple choice
-            </label>
+            {(['single', 'multiple'] as const).map((type) => {
+              const active = type === 'multiple' ? isMultiple : !isMultiple;
+              return (
+                <button
+                  key={type}
+                  type="button"
+                  onClick={() => setIsMultiple(type === 'multiple')}
+                  style={{
+                    padding: `${config.space.S100} ${config.space.S300}`,
+                    borderRadius: config.radii.R300,
+                    border: `1px solid ${active ? 'var(--bg-primary-main)' : 'var(--bg-surface-border)'}`,
+                    background: active ? 'var(--bg-primary-main)' : 'transparent',
+                    color: active ? 'var(--tc-primary-on-primary)' : 'var(--tc-surface-high)',
+                    cursor: 'pointer',
+                    fontSize: '13px',
+                    fontWeight: active ? 600 : 400,
+                    transition: 'all 0.15s ease',
+                  }}
+                >
+                  {type === 'single' ? 'Single choice' : 'Multiple choice'}
+                </button>
+              );
+            })}
           </div>
         </div>