ZJIT: Profile specific objects for invokeblock (#15051)

I made a special kind of `ProfiledType` that looks at specific objects, not just their classes/shapes (https://github.com/ruby/ruby/pull/15051). Then I profiled some of our benchmarks.

For lobsters:

```
Top-6 invokeblock handler (100.0% of total 1,064,155):
        megamorphic: 494,931 (46.5%)
   monomorphic_iseq: 337,171 (31.7%)
        polymorphic: 113,381 (10.7%)
  monomorphic_ifunc:  52,260 ( 4.9%)
  monomorphic_other:  38,970 ( 3.7%)
        no_profiles:  27,442 ( 2.6%)
```

For railsbench:

```
Top-6 invokeblock handler (100.0% of total 2,529,104):
   monomorphic_iseq: 834,452 (33.0%)
        megamorphic: 818,347 (32.4%)
        polymorphic: 632,273 (25.0%)
  monomorphic_ifunc: 224,243 ( 8.9%)
  monomorphic_other:  19,595 ( 0.8%)
        no_profiles:     194 ( 0.0%)
```

For shipit:

```
Top-6 invokeblock handler (100.0% of total 2,104,148):
        megamorphic: 1,269,889 (60.4%)
        polymorphic:   411,475 (19.6%)
        no_profiles:   173,367 ( 8.2%)
  monomorphic_other:   118,619 ( 5.6%)
   monomorphic_iseq:    84,891 ( 4.0%)
  monomorphic_ifunc:    45,907 ( 2.2%)
```

Seems like a monomorphic case for a specific ISEQ actually isn't a bad way of going about this, at least to start...

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