Enforce Identical Strings for avalon_resource_type in Solr and Fedora

[joncameron]

Description

avalon_resource_type values are lower-case in Fedora but titlized in the solr document (https://github.com/avalonmediasystem/avalon/blob/c1a19e0a89fdea66ba40f7a1a93fd66c6dbe21aa/app/models/mods_behaviors.rb#L55) This feels like a minor bug but one that could trip up services or processes which do exact string matching.

See https://github.com/avalonmediasystem/avalon/issues/5834 for original reported issue.

Done Looks Like

• [x] Don't titlize avalon_resource_type values in Solr (make the index match Fedora)
• [x] Add helper method to Titlize in Blacklight display for resource type facet
• [x] avalon_resource_type in media_objects/id.json response is lower-case
• [x] Format facet on search results only has Titlized values (Moving Image and Sound Recording)

[elynema]

We should note what the done looks from a testing perspective. What should we see if it is working correctly as expected?

[cjcolvar]

@elynema I added two additional done looks like criteria which are easier to test.