Fix #12773 Callback mode rpc context loss.

[wuwen5]

What is the purpose of the change

fixed #12773

Brief changelog

Verifying this change

Checklist

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[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

71.4% Coverage
0.0% Duplication

[AlbumenJ]

@chickenlj PTAL

[chickenlj]

LGTM.