[Chore/Refactor] Add missing 'type' attribute on 'button' components (#26249)

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: asukaminato0721 <30024051+asukaminato0721@users.noreply.github.com>

web/app/components/develop/doc.tsx

@@ -168,7 +168,7 @@ const Doc = ({ appDetail }: IDocProps) => {
                 <span className="text-xs font-medium uppercase tracking-wide text-text-tertiary">
                   {t('appApi.develop.toc')}
                 </span>
-                <button
+                <button type="button"
                   onClick={() => setIsTocExpanded(false)}
                   className="group flex h-6 w-6 items-center justify-center rounded-md transition-colors hover:bg-state-base-hover"
                   aria-label="Close"
@@ -224,7 +224,7 @@ const Doc = ({ appDetail }: IDocProps) => {
             </nav>
           )
           : (
-            <button
+            <button type="button"
               onClick={() => setIsTocExpanded(true)}
               className="group flex h-11 w-11 items-center justify-center rounded-full border-[0.5px] border-components-panel-border bg-components-panel-bg shadow-lg transition-all duration-150 hover:bg-background-default-hover hover:shadow-xl"
               aria-label="Open table of contents"