chore: fix anomalous typing concern (#2070)

src/ape/managers/chain.py

@@ -1127,12 +1127,12 @@ def instance_at(
                 isinstance(abi, str) and "{" not in abi and Path(abi).is_file()
             ):
                 # Handle both absolute and relative paths
-                abi = Path(abi)
-                if not abi.is_absolute():
-                    abi = self.project_manager.path / abi
+                abi_path = Path(abi)
+                if not abi_path.is_absolute():
+                    abi_path = self.project_manager.path / abi
 
                 try:
-                    abi = json.loads(abi.read_text())
+                    abi = json.loads(abi_path.read_text())
                 except Exception as err:
                     if contract_type:
                         # If a default contract type was provided, don't error and use it.