[Bug] Unhandled Promise Rejections across multiple files

Hi there! I found .then() chains that do not have a .catch() block in several files. This can lead to unhandled promise rejections crashing the application or causing silent failures. Affected files include:\n- src/components/DropdowndetailsPage.tsx\n- src/components/StatisticDetails.tsx\n- src/components/CalendarDetails.tsx\n- src/components/NavigationDetailsPage.tsx\n- src/components/PaginationDetails.tsx\n\n### Proposed Approach:\n1. Append .catch(err => ...) to all dangling promises.\n2. Add proper user-facing error boundaries or toast notifications if the promise fails.\n3. Add logging for debugging.\n\nI would love to take this on for GSSoC '26. Could you please assign this to me?