chore: align types with @types/react@19

After deduping the lockfile, @types/react@* (transitive via
@types/react-image-gallery) folded into the direct ^19.0.7 entry.
React 19's types removed the global JSX namespace, so use
React.JSX.IntrinsicElements instead. The @ts-expect-error in
ModalGallery existed to suppress the @types/react 18<->19 mismatch
with react-image-gallery; with both on 19, the suppression is unused.

Author: oliverlaz

src/components/Gallery/ModalGallery.tsx

@@ -46,7 +46,6 @@ export const ModalGallery = (props: ModalGalleryProps) => {
   );
 
   return (
-    // @ts-expect-error ignore the TS error as react-image-gallery was on @types/react@18 while stream-chat-react being upgraded to React 19 (https://github.com/xiaolin/react-image-gallery/issues/809)
     <ImageGallery
       items={formattedArray}
       renderItem={renderItem}

src/components/Message/renderText/renderText.tsx

@@ -24,7 +24,7 @@ export type RenderTextPluginConfigurator = (
 ) => PluggableList;
 
 export const defaultAllowedTagNames: Array<
-  keyof JSX.IntrinsicElements | 'emoji' | 'mention'
+  keyof React.JSX.IntrinsicElements | 'emoji' | 'mention'
 > = [
   'html',
   'text',
@@ -89,7 +89,7 @@ export const markDownRenderers: RenderTextOptions['customMarkDownRenderers'] = {
 
 export type RenderTextOptions = {
   allowedTagNames?: Array<
-    keyof JSX.IntrinsicElements | 'emoji' | 'mention' | (string & {})
+    keyof React.JSX.IntrinsicElements | 'emoji' | 'mention' | (string & {})
   >;
   customMarkDownRenderers?: Options['components'] &
     Partial<{