fix: Always resolve aliases when checking APIs

This is required to be able to descend into aliases. We explicitly tell Griffe to use its default behavior for resolving external aliases, i.e. only resolve aliases pointing to private sibling modules (like ast -> _ast).

src/_griffe/cli.py

@@ -482,6 +482,8 @@ def check(
         search_paths=search_paths,
         allow_inspection=allow_inspection,
         force_inspection=force_inspection,
+        resolve_aliases=True,
+        resolve_external=None,
     )
     if base_ref:
         new_package = load_git(
@@ -493,6 +495,8 @@ def check(
             allow_inspection=allow_inspection,
             force_inspection=force_inspection,
             find_stubs_package=find_stubs_package,
+            resolve_aliases=True,
+            resolve_external=None,
         )
     else:
         new_package = load(
@@ -503,6 +507,8 @@ def check(
             allow_inspection=allow_inspection,
             force_inspection=force_inspection,
             find_stubs_package=find_stubs_package,
+            resolve_aliases=True,
+            resolve_external=None,
         )
 
     # Find and display API breakages.