fix: in experimentのときにMRMの状態が変更されない不具合を修正

[yabuta]

Related Issue(required)

Description(required)

MRMが発生後、in_experimentに変わるとそのMRMの状態が更新されなくなっていた
MRMの状態は必ず更新されるように修正する

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Related PR(optional)

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

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