Replace gt-word-break with tw-break-anywhere (#31183)

`overflow-wrap: anywhere` is a superior alternative to `word-wrap:
break-word` and we were already setting it in the class. I tested a few
cases, all look good.

web_src/js/features/repo-issue.js

@@ -125,7 +125,7 @@ export function initRepoIssueSidebarList() {
             }
             filteredResponse.results.push({
               name: `<div class="gt-ellipsis">#${issue.number} ${htmlEscape(issue.title)}</div>
-<div class="text small gt-word-break">${htmlEscape(issue.repository.full_name)}</div>`,
+<div class="text small tw-break-anywhere">${htmlEscape(issue.repository.full_name)}</div>`,
               value: issue.id,
             });
           });