src: simplify watchdog instantiations via std::optional
#76254
| Job | Run time |
|---|---|
| 31m 18s | |
| 38m 9s | |
| 1h 9m 27s |
std::optional
#76254
| Job | Run time |
|---|---|
| 31m 18s | |
| 38m 9s | |
| 1h 9m 27s |