[0.87] Write the prebuilt module-map flag to OTHER_CPLUSPLUSFLAGS

[chrfalch]

Target Branch

0.87

Link to commit or PR to be picked

react/react-native#57742

Description

Write the prebuilt module-map flag to OTHER_CPLUSPLUSFLAGS so C++/ObjC++ sources resolve the relocated namespaces modularly

[github-actions]

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