[0.80] Fix set-rn-version script to address codegen

[cipolleschi]

Target Branch(es)

0.80

Link to commit or PR to be picked

facebook/react-native#51156

Description

test-js jobs are failing because the codegen snapshot tests generates a Podspecs withan hardcoded version that does not matches the version we are about to release.

This fix updates the script that set the RN version to make sure it also updates the Codegen snapshots.

This change also fixes the currently broken snapshots.

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