Fix for ensuring that IVF format is supported for tests

Author: pmpailis

muted-tests.yml

@@ -559,12 +559,21 @@ tests:
 - class: org.elasticsearch.test.apmintegration.TracesApmIT
   method: testApmIntegration
   issue: https://github.com/elastic/elasticsearch/issues/129651
+- class: org.elasticsearch.search.query.RescoreKnnVectorQueryIT
+  method: testKnnSearchRescore
+  issue: https://github.com/elastic/elasticsearch/issues/129713
 - class: org.elasticsearch.snapshots.SnapshotShutdownIT
   method: testSnapshotShutdownProgressTracker
   issue: https://github.com/elastic/elasticsearch/issues/129752
 - class: org.elasticsearch.xpack.security.SecurityRolesMultiProjectIT
   method: testUpdatingFileBasedRoleAffectsAllProjects
   issue: https://github.com/elastic/elasticsearch/issues/129775
+- class: org.elasticsearch.search.query.RescoreKnnVectorQueryIT
+  method: testKnnQueryRescore
+  issue: https://github.com/elastic/elasticsearch/issues/129809
+- class: org.elasticsearch.search.query.RescoreKnnVectorQueryIT
+  method: testKnnRetriever
+  issue: https://github.com/elastic/elasticsearch/issues/129818
 - class: org.elasticsearch.qa.verify_version_constants.VerifyVersionConstantsIT
   method: testLuceneVersionConstant
   issue: https://github.com/elastic/elasticsearch/issues/125638

server/src/internalClusterTest/java/org/elasticsearch/search/query/RescoreKnnVectorQueryIT.java

@@ -85,7 +85,7 @@ protected Map<String, Function<Map<String, Object>, Object>> pluginScripts() {
     public void setup() throws IOException {
         String type = randomFrom(
             Arrays.stream(VectorIndexType.values())
-                .filter(t -> t.isQuantized() && t.isEnabled())
+                .filter(VectorIndexType::isQuantized)
                 .map(t -> t.name().toLowerCase(Locale.ROOT))
                 .collect(Collectors.toCollection(ArrayList::new))
         );

server/src/main/java/org/elasticsearch/index/mapper/vectors/DenseVectorFieldMapper.java

@@ -1655,16 +1655,11 @@ public boolean supportsElementType(ElementType elementType) {
             public boolean supportsDimension(int dims) {
                 return true;
             }
-
-            @Override
-            public boolean isEnabled() {
-                return IVF_FORMAT.isEnabled();
-            }
         };
 
         public static Optional<VectorIndexType> fromString(String type) {
             return Stream.of(VectorIndexType.values())
-                .filter(VectorIndexType::isEnabled)
+                .filter(vectorIndexType -> vectorIndexType != VectorIndexType.BBQ_IVF || IVF_FORMAT.isEnabled())
                 .filter(vectorIndexType -> vectorIndexType.name.equals(type))
                 .findFirst();
         }
@@ -1691,10 +1686,6 @@ public boolean isQuantized() {
             return quantized;
         }
 
-        public boolean isEnabled() {
-            return true;
-        }
-
         public String getName() {
             return name;
         }