[C++] Global recording no longer reachable on current when going out of scope

[Wumpf]

#include <rerun.hpp>

int main() {
    const auto rec = rerun::RecordingStream("rerun_example_0");
    rec.connect().exit_on_failure();

    {
        const auto rec2 = rerun::RecordingStream("rerun_example_1");
        rec2.connect().exit_on_failure();
        rec2.set_global();
    }

    rec.log("recording0", rerun::Points3D({{0.0f, 0.0f, 0.0f}}));
    rerun::RecordingStream::current().log("recording1", rerun::Points3D({{0.0f, 0.0f, 0.0f}}));
}

this will only log to the first recording. This isn't what we documented on set_global:

        /// Replaces the currently active recording for this stream's store kind in the global scope
        /// with this one.
        ///
        /// Afterwards, destroying this recording stream will *not* change the global recording
        /// stream, as it increases an internal ref-count.
        void set_global() const;

TODO: Does this also affect Rust?