Pyrefly suppressions 6/n (#164877)

Adds suppressions to pyrefly will typecheck clean: https://github.com/pytorch/pytorch/issues/163283

Almost there!

Test plan:
dmypy restart && python3 scripts/lintrunner.py -a
pyrefly check

step 1: delete lines in the pyrefly.toml file from the project-excludes field
step 2: run pyrefly check
step 3: add suppressions, clean up unused suppressions
before: https://gist.github.com/maggiemoss/4b3bf2037014e116bc00706a16aef199

after:

INFO 0 errors (5,064 ignored)

Only four directories left to enable

Pull Request resolved: https://github.com/pytorch/pytorch/pull/164877
Approved by: https://github.com/oulgen

torch/_decomp/__init__.py

@@ -240,7 +240,7 @@ def get_decompositions(
 
     registry = global_decomposition_table[type]
     packets_to_overloads = defaultdict(list)
-    # pyrefly: ignore  # bad-assignment
+
     for opo in registry:
         if isinstance(opo, (OpOverload, OpOverloadPacket)):
             packets_to_overloads[opo.overloadpacket].append(opo)

torch/_decomp/decompositions.py

@@ -4079,6 +4079,7 @@ def _nll_loss_forward(
         return result, total_weight
 
     if weight is not None:
+        # pyrefly: ignore  # unbound-name
         w = w.expand(self.shape)
         wsum = torch.gather(w, channel_dim, safe_target_).squeeze(channel_dim)
         wsum = torch.where(target != ignore_index, wsum, 0)