ref: Make SentryProfilingConditionals private

[github-actions]

Note

The pull request "ref: Make SentryProfilingConditionals private" was created by @noahsmartin but did not reference an issue. Therefore this issue was created for better visibility in external tools like Linear.

This doesn't need to be public, no other public headers use it now that SentryOptions is in Swift

#skip-changelog

[linear]

COCOA-1008