IQSS / dataverse / #22474

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avoid expensive Solr join for public dvObjects in search (experimental) (#10555)

* avoid expensive Solr join when guest users search (affect IP Groups) #10554

* fix copy/past error, target doc for file, not dataset #10554

* Checking a few experimental changes into the branch:
Jim's soft commit fixes from 10547;
A quick experiment, replacing join on public objects with a boolean publicObject_b:true
for logged-in users as well (with a join added for just for their own personal documents;
groups are ignored for now). #10554

* Step 3, of the performance improvement effort relying on a boolean "publicObject" flag for
published documents - now for logged-in users, AND with support for groups.
Group support experimental, but appears to be working. #10554

* Modified the implementation for the guest user, to support ip groups. #10554

* Removed the few autocommit-related changes previously borrowed from 10547, to keep things separate and clear, for testing etc. #10554

* Reorganized the optimized code in SearchServiceBean; combined the code block
for the guest and authenticated users. #10554

* updated the release note. #10554

* Removed the warning from the ip groups guide about the effect of the new
search optimization feture that was no longer true. #10554

* Updated the section of the guide describing the new Solr optimization
feature flags. #10554

* Updated the performance section of the guide. #10554

* Modified IndexServiceBean to use the new feature flag, that has been separated from the flag that
enables the search-side optimization;
Fixed the groups sub-query for the guest user. #10554

* cosmetic #10554

* doc tweaks #10554

* no-op code cleanup, correct case of publicObject_b #10554

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Co-authored-by: Leonid Andreev <leonid@hmdc.harvard.edu>

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