The added support is expected with Patch 1 release for VSE 8.8 - ETA is foggy but could be as early as September for general availability.
8.7i is not expected to receive these updates as there is no planned delivery mechanism, i.e. no further patch updates planned for 8.7i. We'll be reposting Patch 5 in the near future but not to address this issue. If you need that feature supported in the newer browsers for 8.7i it's recommended to open a service request with McAfee Support.
Thank you Warren for the update, I'll open a service request with Support per your suggestion. I do hope that post 8.8 Patch 1 that ScriptScan can be updated via Engine, or DAT updates that are automatic. Browser updates are comming too frequently now and the McAfee Patch release schedule doesn't align well.