Fix compile error from previous commit (#48230)

The previous commit, 3a6fa0b introduces a
compile error that was fixed locally but not committed. This commit adds the
missing change.

Author: DaveCTurner

server/src/test/java/org/elasticsearch/index/IndexModuleTests.java

@@ -426,7 +426,7 @@ public void testIndexAnalyzersCleanedUpIfIndexServiceCreationFails() {
         final IndexSettings indexSettings = IndexSettingsModule.newIndexSettings("foo", settings);
 
         final HashSet<Analyzer> openAnalyzers = new HashSet<>();
-        final AnalysisModule.AnalysisProvider<AnalyzerProvider<?>> analysisProvider = (i,e,n,s) -> new AnalyzerProvider<>() {
+        final AnalysisModule.AnalysisProvider<AnalyzerProvider<?>> analysisProvider = (i,e,n,s) -> new AnalyzerProvider<Analyzer>() {
             @Override
             public String name() {
                 return "test";