Fix cancel button links in edit forms to redirect to /home

- Update BillEditForm cancel button to redirect to /home
- Update LocationEditForm cancel button to redirect to /home
- Update UserSettingsForm cancel button to redirect to /home

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

app/ui/BillEditForm.tsx

@@ -249,7 +249,7 @@ export const BillEditForm: FC<BillEditFormProps> = ({ location, bill }) => {
 
                     <div className="pt-4">
                         <button type="submit" className="btn btn-primary">{t("save-button")}</button>
-                        <Link className="btn btn-neutral ml-3" href={`/?year=${billYear}&month=${billMonth}`}>{t("cancel-button")}</Link>
+                        <Link className="btn btn-neutral ml-3" href={`/home?year=${billYear}&month=${billMonth}`}>{t("cancel-button")}</Link>
                     </div>
 
                     <div id="status-error" aria-live="polite" aria-atomic="true">