Report backup size in bytes instead of MB (#131028)

Co-authored-by: Robert Resch <robert@resch.dev>

homeassistant/components/backup/backup.py

@@ -56,7 +56,7 @@ class CoreLocalBackupAgent(LocalBackupAgent):
                     backup_id=base_backup.backup_id,
                     name=base_backup.name,
                     date=base_backup.date,
-                    size=round(backup_path.stat().st_size / 1_048_576, 2),
+                    size=backup_path.stat().st_size,
                     protected=base_backup.protected,
                 )
                 backups[backup.backup_id] = backup

homeassistant/components/backup/manager.py

@@ -613,7 +613,7 @@ class CoreBackupReaderWriter(BackupReaderWriter):
                 date=date_str,
                 name=backup_name,
                 protected=password is not None,
-                size=round(size_in_bytes / 1_048_576, 2),
+                size=size_in_bytes,
             )
             success = True
             return (backup, tar_file_path)

homeassistant/components/backup/models.py

@@ -11,7 +11,7 @@ class BaseBackup:
     date: str
     name: str
     protected: bool
-    size: float
+    size: int
 
     def as_dict(self) -> dict:
         """Return a dict representation of this backup."""

homeassistant/components/backup/util.py

@@ -24,5 +24,5 @@ def read_backup(backup_path: Path) -> BaseBackup:
             date=cast(str, data["date"]),
             name=cast(str, data["name"]),
             protected=cast(bool, data.get("protected", False)),
-            size=round(backup_path.stat().st_size / 1_048_576, 2),
+            size=backup_path.stat().st_size,
         )