In `nsJSContext::AddSupportsPrimitiveTojsvals` in nsJSEnvironment.cpp, use `aArgv->setNumber` to match the other `aArgv->set*` calls there. In Codegen.py this fixes two stale references to TI. This is for generating the `JSJitInfo` data used by the JIT. Differential Revision: https://phabricator.services.mozilla.com/D311319