[8.11](backport #3696) Fix TestManager_FakeInput_GoodUnitToBad

[mergify]

This is an automatic backport of pull request #3696 done by Mergify.

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[elastic-sonarqube]

SonarQube Quality Gate

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
0.0% Duplication

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💚 Build Succeeded

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• Start Time: 2023-11-02T22:36:31.445+0000

• Duration: 29 min 45 sec

Test stats 🧪

Test	Results
Failed	0
Passed	6501
Skipped	59
Total	6560

💚 Flaky test report

Tests succeeded.

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🌐 Coverage report

Name	Metrics % (covered/total)	Diff
Packages	98.81% (83/84)	👍
Files	66.556% (201/302)	👍
Classes	65.419% (367/561)	👍
Methods	52.869% (1161/2196)	👍
Lines	39.206% (13547/34553)	👍 0.029
Conditionals	100.0% (0/0)	💚