Revert "ignore hash/fragment when de-duplicating links for url previews"

src/components/views/messages/TextualBody.tsx

@@ -294,15 +294,15 @@ export default class TextualBody extends React.Component<IProps, IState> {
             // pass only the first child which is the event tile otherwise this recurses on edited events
             let links = this.findLinks([this.contentRef.current]);
             if (links.length) {
-                // de-duplicate the links after stripping hashes as they don't affect the preview
-                // using a set here maintains the order
-                links = Array.from(new Set(links.map(link => {
-                    const url = new URL(link);
-                    url.hash = "";
-                    return url.toString();
-                })));
+                // de-dup the links (but preserve ordering)
+                const seen = new Set();
+                links = links.filter((link) => {
+                    if (seen.has(link)) return false;
+                    seen.add(link);
+                    return true;
+                });
 
-                this.setState({ links });
+                this.setState({ links: links });
 
                 // lazy-load the hidden state of the preview widget from localstorage
                 if (window.localStorage) {