Fix E2E test reporting message for webhook (#29304)

* Fix testcases failing  Webpack compilation
* Fix E2E test report message for webhook
* Demote more unstable tests
* Fix playwright reporting message, better test demotion

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Co-authored-by: Mattermost Build <build@mattermost.com>

e2e-tests/cypress/utils/constants.js

@@ -3,8 +3,10 @@
 
 const RESULTS_DIR = 'results';
 const MOCHAWESOME_REPORT_DIR = 'results/mochawesome-report';
+const AD_CYCLE_FILE = 'results/ad_cycle.json';
 
 module.exports = {
     MOCHAWESOME_REPORT_DIR,
     RESULTS_DIR,
+    AD_CYCLE_FILE,
 };