Change status content markup to match upstream (#2923)

* Remove option to have media outside of CWs

Upstream adopted the media-in-CW design glitch-soc originally had.

* Move poll to StatusContent

* Refactor status media icons

* Rename `forceFilter` to `showDespiteFilter` for consistency with upstream

* Change media and status content markup to match upstream's

* Add mention placeholders back

app/javascript/flavours/glitch/components/content_warning.tsx

@@ -1,17 +1,25 @@
+import type { IconName } from './media_icon';
+import { MediaIcon } from './media_icon';
 import { StatusBanner, BannerVariant } from './status_banner';
 
 export const ContentWarning: React.FC<{
   text: string;
   expanded?: boolean;
   onClick?: () => void;
-  icons?: React.ReactNode[];
+  icons?: IconName[];
 }> = ({ text, expanded, onClick, icons }) => (
   <StatusBanner
     expanded={expanded}
     onClick={onClick}
     variant={BannerVariant.Warning}
   >
-    {icons}
+    {icons?.map((icon) => (
+      <MediaIcon
+        className='status__content__spoiler-icon'
+        icon={icon}
+        key={`icon-${icon}`}
+      />
+    ))}
     <p dangerouslySetInnerHTML={{ __html: text }} />
   </StatusBanner>
 );