Fix the dimensions for bit element_type

Author: thecoop

muted-tests.yml

@@ -501,9 +501,6 @@ tests:
 - class: org.elasticsearch.xpack.esql.qa.single_node.PushQueriesIT
   method: testEqualityAndOther {SEMANTIC_TEXT_WITH_KEYWORD}
   issue: https://github.com/elastic/elasticsearch/issues/137491
-- class: org.elasticsearch.index.mapper.vectors.DenseVectorFieldMapperTests
-  method: testUpdates
-  issue: https://github.com/elastic/elasticsearch/issues/137512
 - class: org.elasticsearch.xpack.ilm.CCRIndexLifecycleIT
   method: testBasicCCRAndILMIntegration {targetCluster=FOLLOWER}
   issue: https://github.com/elastic/elasticsearch/issues/137494

server/src/test/java/org/elasticsearch/index/mapper/vectors/DenseVectorFieldMapperTests.java

@@ -264,18 +264,16 @@ protected void registerParameters(ParameterChecker checker) throws IOException {
         registerConflict(
             checker,
             "element_type",
-            b -> b.field("type", "dense_vector").field("dims", dims).field("index", true).field("similarity", "l2_norm"),
-            "element_type",
-            "float",
-            "bit"
+            b -> b.field("type", "dense_vector").field("index", true).field("similarity", "l2_norm"),
+            b -> b.field("dims", dims).field("element_type", "float"),
+            b -> b.field("dims", dims * 8).field("element_type", "bit")
         );
         registerConflict(
             checker,
             "element_type",
-            b -> b.field("type", "dense_vector").field("dims", dims).field("index", true).field("similarity", "l2_norm"),
-            "element_type",
-            "byte",
-            "bit"
+            b -> b.field("type", "dense_vector").field("index", true).field("similarity", "l2_norm"),
+            b -> b.field("dims", dims).field("element_type", "float"),
+            b -> b.field("dims", dims * 8).field("element_type", "bit")
         );
 
         // update for flat