Merge pull request #131 from reload/4922-more-regex-fix

Don't use advanced regex not supported by Safari

src/apps/related-materials/related-materials.entry.jsx

@@ -196,7 +196,7 @@ function useGetRelatedMaterials({
 function stringToArray(string) {
   // Replace escaped commas with newlines (which doesn't make sense in a comma
   // separated string) so we wont split on them.
-  const unescapedParts = replace(string, "\\,", "\n").split(/(?<!\\),/);
+  const unescapedParts = replace(string, "\\,", "\n").split(/,/);
   const escapedParts = unescapedParts.map(part => replace(part, "\n", ","));
   // Remove leading and trailing spaces and empty values.
   const trimmedParts = escapedParts.map(part => part.trim());