fix phonon alphaid to legacy mpid serialization

Author: esoteric-ephemera

mp_api/client/routes/materials/phonon.py

@@ -5,6 +5,7 @@
 from typing import TYPE_CHECKING
 
 from emmet.core.phonon import PhononBS, PhononBSDOSDoc, PhononBSDOSTask, PhononDOS
+from emmet.core.mpid import AlphaID
 
 from mp_api.client.core import BaseRester, MPRestError, MPRestWarning
 from mp_api.client.core.utils import validate_ids
@@ -101,7 +102,7 @@ def get_bandstructure_from_phonon_id(
         """
         result = self._query_open_data(
             bucket="materialsproject-parsed",
-            key=f"ph-bandstructures/{phonon_method}/{identifier}.json.gz",
+            key=f"ph-bandstructures/{phonon_method}/{AlphaID(identifier).string}.json.gz",
         )[0][0]
 
         return (
@@ -136,7 +137,7 @@ def get_dos_from_phonon_id(
         """
         result = self._query_open_data(
             bucket="materialsproject-parsed",
-            key=f"ph-dos/{phonon_method}/{identifier}.json.gz",
+            key=f"ph-dos/{phonon_method}/{AlphaID(identifier).string}.json.gz",
         )[0][0]
 
         return (