Fix handling of multiple compilation units

A library may live on its own source unit, separate from the
contract that uses it, so we need to clean up the target contracts
set at the end.

Author: elopez

crytic_compile/crytic_compile.py

@@ -658,11 +658,12 @@ def _apply_autolink(self) -> None:
 
                 for contract_name in source_unit.contracts_names:
                     deps = source_unit.libraries_names(contract_name)
-
-                    if deps or contract_name in all_target_contracts:
+                    if deps:
                         all_dependencies[contract_name] = deps
                         all_libraries_needed.update(deps)
 
+        all_target_contracts = [c for c in all_target_contracts if c not in all_libraries_needed]
+
         # Calculate deployment order globally
         deployment_order, _ = get_deployment_order(all_dependencies, all_target_contracts)
         self._autolink_deployment_order = deployment_order