### Description

Dynamic mappings can greatly help the getting started experience but they currently don't apply to all types, one example is `dense_vector`.

It's been suggested to automatically map float arrays as dense vectors when there are more than 100 values, or a heuristic along these lines.
server/src/main/java/org/elasticsearch/index/mapper/DynamicFieldsBuilder.java
context
            );
        }
        @Override
        public void newDynamicDoubleField(DocumentParserContext context, String name) throws IOException {
            
            
            
            createDynamicField(
                new NumberFieldMapper.Builder(
                    name,
                    NumberFieldMapper.NumberType.FLOAT,
                    ScriptCompiler.NONE,
                    context.indexSettings().getSettings(),
                    context.indexSettings().getIndexVersionCreated(),
                    context.indexSettings().getMode()
                ),
                context
            );
        }
        @Override
        public void newDynamicBooleanField(DocumentParserContext context, String name) throws IOException {
            Settings settings = context.indexSettings().getSettings();
            boolean ignoreMalformed = FieldMapper.IGNORE_MALFORMED_SETTING.get(settings);
            createDynamicField(
                new BooleanFieldMapper.Builder(
                    name,
                    ScriptCompiler.NONE,
                    ignoreMalformed,
                    context.indexSettings().getIndexVersionCreated()