rustdoc-json: Move #[macro_export] from Other to it's own variant
#169709
| Job | Run time |
|---|---|
| 36s | |
| 44m 13s | |
| 37m 32s | |
| 44m 5s | |
| 1h 1m 22s | |
| 5m 35s | |
| 1h 5m 12s | |
| 1h 17m 44s | |
| 50m 31s | |
| 0s | |
| 6h 26m 50s |