[7.10] [SECURITY_SOLUTION][ENDPOINT] Trusted Apps - fix error for duplicate fields to correctly mention the field at fault (#79853)

[paul-tavares]

Backports the following commits to 7.10:

• [SECURITY_SOLUTION][ENDPOINT] Trusted Apps - fix error for duplicate fields to correctly mention the field at fault ([SECURITY_SOLUTION][ENDPOINT] Trusted Apps - fix error for duplicate fields to correctly mention the field at fault #79853)

[kibanamachine]

💛 Build succeeded, but was flaky

• continuous-integration/kibana-ci/pull-request
• Commit: 7bc369c
• Flaky suites:
  • xpack-securitySolutionCypress

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Test Failures

Open one alert when more than one closed alerts are selected.Alerts Opening alerts Open one alert when more than one closed alerts are selected

Link to Jenkins

Stack Trace

Failed Tests Reporter:
  - Test has failed 4 times on tracked branches: https://github.com/elastic/kibana/issues/77957

AssertionError: Timed out retrying: Expected to find element: `[data-test-subj="event"]`, but never found it.
    at Object../cypress/tasks/alerts.ts.exports.waitForAlertsToBeLoaded (http://localhost:6111/__cypress/tests?p=cypress/integration/alerts.spec.ts:13864:29)
    at Context.eval (http://localhost:6111/__cypress/tests?p=cypress/integration/alerts.spec.ts:13562:22)

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Metrics [docs]

✅ unchanged

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