Improve 'Boost' plugin descriptions to better reflect that they both boost existing result relevance + find results that otherwise would not have been found
>>> [!note] Migrated issue
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<!-- Migrated from issue #3491447. -->
Reported by: [scott_euser](https://www.drupal.org/user/3267594)
Related to !398
>>>
<h3 id="summary-problem-motivation">Problem/Motivation</h3>
<ol>
<li>Boost implies that it only re-orders results from traditional search</li>
<li>Really it actually potentially adds to the results if vector results are more than SOLR ones (though filters/access still applied)</li>
</ol>
<h4 id="summary-steps-reproduce">Steps to reproduce</h4>
<p>Labels in search api processors are 'Boost'</p>
<h3 id="summary-proposed-resolution">Proposed resolution</h3>
<ol>
<li><del>Relabel + change machine name</del></li>
<li><del>Update hook</del></li>
</ol>
<ol>
<li>Update description to reflect that it is boost and combine</li>
</ol>
<h3 id="summary-remaining-tasks">Remaining tasks</h3>
<p>MR</p>
<h3 id="summary-ui-changes">User interface changes</h3>
<p>Boost -> Boost and combine</p>
<h3 id="summary-api-changes">API changes</h3>
<p>N/A</p>
<h3 id="summary-data-model-changes">Data model changes</h3>
<p>N/A</p>
issue