HibernateFunctionContributor: Use websearch_to_tsquery database function.

Change-Id: I753550e35d911a3adf428a2b789e5b30418248e1
diff --git a/src/main/java/eu/mulk/mulkcms2/common/hibernate/HibernateFunctionContributor.java b/src/main/java/eu/mulk/mulkcms2/common/hibernate/HibernateFunctionContributor.java
index 1a7074d..e599c5c 100644
--- a/src/main/java/eu/mulk/mulkcms2/common/hibernate/HibernateFunctionContributor.java
+++ b/src/main/java/eu/mulk/mulkcms2/common/hibernate/HibernateFunctionContributor.java
@@ -17,8 +17,7 @@
     var functionRegistry = functionContributions.getFunctionRegistry();
 
     functionRegistry
-        .patternDescriptorBuilder(
-            "post_matches_websearch", "(?1 @@ websearch_to_tsquery(language_regconfig(?2), ?3))")
+        .namedDescriptorBuilder("post_matches_websearch")
         .setInvariantType(typeRegistry.resolve(BOOLEAN))
         .setExactArgumentCount(3)
         .setArgumentListSignature("(STRING searchTerms, STRING language, STRING queryText)")