[ML] Changing all calls to ML endpoints to use internal user (#70487)

* [ML] Changing all calls to ML endpoints to use internal user

* updating alerting

* updating documentation

* [ML] Changing all calls to ML endpoints to use internal user

* updating alerting

* updating documentation

* fixing missed types

* adding authorization headers to endpoint calls

* correcting has privileges call

* updating security tests

* odd eslint error

* adding auth header to module setup

* fixing missing auth argument

* fixing delete DFA job permission checks

* removing debug test tag

* removing additional ml privilege checks

* adding authorization header to _evaluate

* updating alerting cluster client name

* code clean up

* changing authorizationHeader name

* updating alterting documentation

* fixing secondary credentials

* adding management links

* updating SIEM telemetry

* fixing merge conflicts

* granting access to index patterns

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

x-pack/test/api_integration/apis/security/privileges_basic.ts

@@ -33,6 +33,7 @@ export default function ({ getService }: FtrProviderContext) {
             logs: ['all', 'read'],
             uptime: ['all', 'read'],
             apm: ['all', 'read'],
+            ml: ['all', 'read'],
             siem: ['all', 'read'],
             ingestManager: ['all', 'read'],
           },