I was finally able to bypass this No code signature found issue. As the last build phase, I have added a script which signs the frameworks inside the compiled app, meaning all frameworks inside $CODESIGNING_FOLDER_PATH/Frameworks. Unfortunately, I can't share my script since it is based on a codesign.py file which SAP published as part of their proprietary SAP Cloud Platform SDK 5.0 (Version 5.0 of CP SDK for iOS Released | SAP Blogs). Without googling, I guess there are a few more scripts available out there for the same purpose 
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