Fix dead code branch by checking artifact starting with cname early

Author: ByteOtter

src/gardenlinux/s3/s3_artifacts.py

@@ -193,9 +193,14 @@ def upload_from_directory(
         }
 
         for artifact in artifacts_dir.iterdir():
-            if not artifact.match(f"{cname}*"):
+            if not artifact.is_file():
                 continue
 
+            if not not artifact.name.startswith(cname):
+                raise RuntimeError(
+                    f"Artifact name '{artifact.name}' does not start with cname '{cname}'"
+                )
+
             s3_key = f"objects/{cname}/{artifact.name}"
 
             with artifact.open("rb") as fp:
@@ -204,10 +209,6 @@ def upload_from_directory(
 
             if artifact.name.startswith(cname):
                 suffix = artifact.name[len(cname) :]
-            else:
-                raise RuntimeError(
-                    f"Artifact name '{artifact.name}' does not start with cname '{cname}'"
-                )
 
             artifact_metadata = {
                 "name": artifact.name,