[Functional Tests] Increase waitTime for timelion to fetch the results (#73255)

Co-authored-by: Elastic Machine <elasticmachine@users.noreply.github.com>

Author: stratoula

test/functional/page_objects/timelion_page.ts

@@ -47,7 +47,7 @@ export function TimelionPageProvider({ getService, getPageObjects }: FtrProvider
     public async updateExpression(updates: string) {
       const input = await testSubjects.find('timelionExpressionTextArea');
       await input.type(updates);
-      await PageObjects.common.sleep(500);
+      await PageObjects.common.sleep(1000);
     }
 
     public async getExpression() {
@@ -60,7 +60,7 @@ export function TimelionPageProvider({ getService, getPageObjects }: FtrProvider
       return await Promise.all(elements.map(async (element) => await element.getVisibleText()));
     }
 
-    public async clickSuggestion(suggestionIndex = 0, waitTime = 500) {
+    public async clickSuggestion(suggestionIndex = 0, waitTime = 1000) {
       const elements = await testSubjects.findAll('timelionSuggestionListItem');
       if (suggestionIndex > elements.length) {
         throw new Error(