Fix compilation for (#86591)

The above PR was merged concurrently to another one that refactored
a method name.

Author: ywelsch

server/src/main/java/org/elasticsearch/snapshots/RestoreService.java

@@ -1672,7 +1672,7 @@ private static IndexMetadata convertLegacyIndex(
 
             try {
                 Mapping mapping;
-                try (MapperService mapperService = indicesService.createIndexMapperService(convertedIndexMetadata)) {
+                try (MapperService mapperService = indicesService.createIndexMapperServiceForValidation(convertedIndexMetadata)) {
                     // create and validate in-memory mapping
                     mapperService.merge(convertedIndexMetadata, MapperService.MergeReason.MAPPING_RECOVERY);
                     mapping = mapperService.documentMapper().mapping();