Fix not removing absolute path in Maya DL submission

This occured only in Maya (or DCC with AOV), caused pasting whole absolute path to metadata.json which could caused `Given file names contain full paths` (if ValidateExpectedFiles was disabled).
'files' is expecting only file names, not full path.

client/ayon_core/pipeline/farm/pyblish_functions.py

@@ -788,6 +788,11 @@ def _create_instances_for_aov(instance, skeleton, aov_filter, additional_data,
                 colorspace = product.colorspace
                 break
 
+        if isinstance(files, (list, tuple)):
+            files = [os.path.basename(f) for f in files]
+        else:
+            files = os.path.basename(files)
+
         rep = {
             "name": ext,
             "ext": ext,