gh-131798: Constant-fold _CONTAINS_OP_DICT for frozendict
#251208
| Job | Run time |
|---|---|
| 4s | |
| 4s | |
| 8s |
_CONTAINS_OP_DICT for frozendict
#251208
| Job | Run time |
|---|---|
| 4s | |
| 4s | |
| 8s |