[7.x] [Discover] Migrate Context mocha tests to use Jest (#59658)

[kertal]

Backports the following commits to 7.x:

• [Discover] Migrate Context mocha tests to use Jest ([Discover] Migrate Context mocha tests to use Jest #59658)

[kibanamachine]

💛 Build succeeded, but was flaky

• continuous-integration/kibana-ci/pull-request
• Commit: f51b930
• Flaky suites:
  • xpack-siemCypress

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Test Failures

Kibana Pipeline / kibana-xpack-agent / renders the data provider of a host dragged from the All Hosts widget on the hosts page.timeline data providers renders the data provider of a host dragged from the All Hosts widget on the hosts page

Link to Jenkins

Standard Out

Failed Tests Reporter:
  - Test has not failed recently on tracked branches

Stack Trace

CypressError: Timed out retrying: expected 'suricata-iowa' to equal 'host.name: "suricata-iowa"'
    at cypressErr (http://elastic:changeme@localhost:61121/__cypress/runner/cypress_runner.js:149934:9)
    at throwErr (http://elastic:changeme@localhost:61121/__cypress/runner/cypress_runner.js:149867:11)
    at Object.throwErrByPath (http://elastic:changeme@localhost:61121/__cypress/runner/cypress_runner.js:149915:3)
    at retry (http://elastic:changeme@localhost:61121/__cypress/runner/cypress_runner.js:144197:19)
    at onFailFn (http://elastic:changeme@localhost:61121/__cypress/runner/cypress_runner.js:132448:16)
    at tryCatcher (http://elastic:changeme@localhost:61121/__cypress/runner/cypress_runner.js:167415:23)
    at Promise._settlePromiseFromHandler (http://elastic:changeme@localhost:61121/__cypress/runner/cypress_runner.js:165351:31)
    at Promise._settlePromise (http://elastic:changeme@localhost:61121/__cypress/runner/cypress_runner.js:165408:18)
    at Promise._settlePromise0 (http://elastic:changeme@localhost:61121/__cypress/runner/cypress_runner.js:165453:10)
    at Promise._settlePromises (http://elastic:changeme@localhost:61121/__cypress/runner/cypress_runner.js:165528:18)
    at Async../node_modules/bluebird/js/release/async.js.Async._drainQueue (http://elastic:changeme@localhost:61121/__cypress/runner/cypress_runner.js:162140:16)
    at Async../node_modules/bluebird/js/release/async.js.Async._drainQueues (http://elastic:changeme@localhost:61121/__cypress/runner/cypress_runner.js:162150:10)
    at Async.drainQueues (http://elastic:changeme@localhost:61121/__cypress/runner/cypress_runner.js:162024:14)

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To update your PR or re-run it, just comment with:
@elasticmachine merge upstream