Only run patterned_text mapper test if feature flag enabled (#130214) (#130480)

(cherry picked from commit f88aaa3)

# Conflicts:
#	muted-tests.yml

Author: parkertimmins

x-pack/plugin/logsdb/src/test/java/org/elasticsearch/xpack/logsdb/patternedtext/PatternedTextFieldMapperTests.java

@@ -40,6 +40,7 @@
 import org.elasticsearch.xcontent.XContentFactory;
 import org.elasticsearch.xpack.logsdb.LogsDBPlugin;
 import org.junit.AssumptionViolatedException;
+import org.junit.Before;
 
 import java.io.IOException;
 import java.util.Collection;
@@ -72,6 +73,11 @@ protected void assertExistsQuery(MappedFieldType fieldType, Query query, LuceneD
         assertNoFieldNamesField(fields);
     }
 
+    @Before
+    public void setup() {
+        assumeTrue("Only when patterned_text feature flag is enabled", PatternedTextFieldMapper.PATTERNED_TEXT_MAPPER.isEnabled());
+    }
+
     public void testExistsStandardSource() throws IOException {
         assertExistsQuery(createMapperService(fieldMapping(b -> b.field("type", "patterned_text"))));
     }