[APM] Fix for flaky correlations API test (elastic#91673) (elastic#92094

)

Co-authored-by: Kibana Machine <42973632+kibanamachine@users.noreply.github.com>

x-pack/test/apm_api_integration/tests/correlations/slow_transactions.ts

@@ -23,8 +23,7 @@ export default function ApiTest({ getService }: FtrProviderContext) {
       start: range.start,
       end: range.end,
       durationPercentile: 95,
-      fieldNames:
-        'user.username,user.id,host.ip,user_agent.name,kubernetes.pod.uuid,url.domain,container.id,service.node.name',
+      fieldNames: 'user_agent.name,user_agent.os.name,url.original',
     },
   });
 
@@ -53,19 +52,22 @@ export default function ApiTest({ getService }: FtrProviderContext) {
     });
 
     it('returns significant terms', () => {
-      const sorted = response.body?.significantTerms?.sort();
-      expectSnapshot(sorted?.map((term) => term.fieldName)).toMatchInline(`
+      const significantTerms = response.body?.significantTerms as NonNullable<
+        typeof response.body.significantTerms
+      >;
+      expect(significantTerms).to.have.length(9);
+      const sortedFieldNames = significantTerms.map(({ fieldName }) => fieldName).sort();
+      expectSnapshot(sortedFieldNames).toMatchInline(`
         Array [
+          "url.original",
+          "url.original",
+          "url.original",
+          "url.original",
           "user_agent.name",
-          "url.domain",
-          "host.ip",
-          "service.node.name",
-          "container.id",
-          "url.domain",
-          "host.ip",
-          "service.node.name",
-          "container.id",
           "user_agent.name",
+          "user_agent.name",
+          "user_agent.os.name",
+          "user_agent.os.name",
         ]
       `);
     });
@@ -83,7 +85,6 @@ export default function ApiTest({ getService }: FtrProviderContext) {
           15,
           15,
           15,
-          15,
         ]
       `);
     });