update in semantic_text mapper and fetcher to incorporate the support functionality

Author: Samiul-TheSoccerFan

server/src/main/java/org/elasticsearch/action/fieldcaps/FieldCapabilitiesFetcher.java

@@ -174,7 +174,7 @@ static Map<String, IndexFieldCapabilities> retrieveFieldCaps(
             if ((includeEmptyFields || ft.fieldHasValue(fieldInfos))
                 && (fieldPredicate.test(ft.name()) || context.isMetadataField(ft.name()))
                 && (filter == null || filter.test(ft))
-                && ft.familyTypeName() != null) {
+                && ft.excludeFromFieldCaps() == false) {
                 IndexFieldCapabilities fieldCap = new IndexFieldCapabilities(
                     field,
                     ft.familyTypeName(),

x-pack/plugin/inference/src/main/java/org/elasticsearch/xpack/inference/mapper/SemanticTextFieldMapper.java

@@ -1046,7 +1046,7 @@ private static NestedObjectMapper.Builder createChunksField(
                 .excludeFromFieldCaps(true);
             chunksField.add(chunkTextField);
         } else {
-            chunksField.add(new OffsetSourceFieldMapper.Builder(CHUNKED_OFFSET_FIELD));
+            chunksField.add(new OffsetSourceFieldMapper.Builder(CHUNKED_OFFSET_FIELD).excludeFromFieldCaps(true));
         }
         return chunksField;
     }
@@ -1057,14 +1057,13 @@ private static Mapper.Builder createEmbeddingsField(
         boolean useLegacyFormat
     ) {
         return switch (modelSettings.taskType()) {
-            case SPARSE_EMBEDDING -> new SparseVectorFieldMapper.Builder(CHUNKED_EMBEDDINGS_FIELD, true).setStored(
+            case SPARSE_EMBEDDING -> new SparseVectorFieldMapper.Builder(CHUNKED_EMBEDDINGS_FIELD).setStored(
                 useLegacyFormat == false
-            );
+            ).setExcludeFromFieldCaps(true);
             case TEXT_EMBEDDING -> {
                 DenseVectorFieldMapper.Builder denseVectorMapperBuilder = new DenseVectorFieldMapper.Builder(
                     CHUNKED_EMBEDDINGS_FIELD,
-                    indexVersionCreated,
-                    true
+                    indexVersionCreated
                 );
 
                 SimilarityMeasure similarity = modelSettings.similarity();
@@ -1089,6 +1088,7 @@ private static Mapper.Builder createEmbeddingsField(
                     && defaultIndexOptions.validate(modelSettings.elementType(), modelSettings.dimensions(), false)) {
                     denseVectorMapperBuilder.indexOptions(defaultIndexOptions);
                 }
+                denseVectorMapperBuilder.excludeFromFieldCaps(true);
 
                 yield denseVectorMapperBuilder;
             }