Restores icons in language editor

Closes #3754

There was a breaking change with I believe raw-loader or file-loader
or svg-loader or some such, we already had 2 other similar PRs for
this same issue in other areas.

After that dependency update, I think in 9.5.0,
we now need to add `.default` at the end of svg imports.

This fixes the same issue in the language resources editor.

I did a search to find if we missed this in other spots and did not find
any other instance.

Dnn.AdminExperience/ClientSide/SiteSettings.Web/src/components/editLanguagePanel/resourceEditor/fullEditor.jsx

@@ -59,7 +59,7 @@ class FullEditor extends Component {
                                             data-role={button} 
                                             href='#'
                                             onClick={this.execCommand.bind(this, button)}
-                                            dangerouslySetInnerHTML={{ __html: require("./icons/" + button + ".svg") }}
+                                            dangerouslySetInnerHTML={{ __html: require("./icons/" + button + ".svg").default }}
                                             key={i}>
                                         </a>
                                     );