Upgrade to Solr 10

Solr (from 9.11.0): https://solr.apache.org/docs/10_0_0/changes/Changes.html

Lucene (from 9.12.3): https://lucene.apache.org/core/10_3_2/changes/Changes.html

Things to take into account:

• Lucene 10 cannot open an index created with Lucene 8, so a Solr core created by an XWiki version based on Solr 8 cannot be migrated directly (see XWIKI-25423).
• SolrJ moved its Jetty based HTTP client to the new solr-solrj-jetty module, which uses Jetty 12 (SolrJ 9 uses Jetty 10). This is what blocks XWIKI-24337.
• Solr 10 and Lucene 10 require Java 21.
• Lucene 10 should remove the Lucene warning displayed on Java 23 or later (see XWIKI-25453).
• The Docker based functional tests only support a remote Solr 9 for now (SolrContainerExecutor).
• The solr:10 Docker image starts in SolrCloud mode by default, while XWiki relies on the standalone mode (now called "user-managed", --user-managed) for remote Solr. Also, Solr 10 refuses to start with the solr.xml of a Solr 8 home.
• With the embedded Solr, CoreContainer#getCore throws an exception for a core which failed to be loaded (instead of returning null), which EmbeddedSolr#getCore will have to handle to detect a Solr 8 core which cannot be migrated anymore (see XWIKI-25423, which handles it for remote Solr).