Fallback in case of missing most specific type for microformat macro

Created by: gneissone

JIRA Issue: Fixes #3612 (closed)

• Other Relevant Links (Mailing list discussion, related pull requests, etc.) https://groups.google.com/g/vivo-tech/c/PEIjS7kuIeY/m/odmwhKXeBwAJ

What does this pull request do?

Prevents a Freemarker error encountered in rare cases.

What's new?

Adds blank fallback in case of issue retrieving a most specific type value within the lib-microformats.ftl file.

How should this be tested?

Search an individual's page source for a microformat value, e.g. itemscope itemtype="http://schema.org/Thing" before applying change. After applying change, you should still see the microformat value on the page... but it should also prevent a freemarker error from being thrown in case the macro was unable to find a most specific type (for whatever reason...).

Additional Notes:

Unfortunately I don't know exactly why this error is happening... this is more of a band-aid than an actual fix for the core problem, but it doesn't hurt to work around the problem in lieu of investing more time finding the root cause.

Interested parties

@VIVO-project/vivo-committers