fix(profiles): pass encoding=utf-8 to distribution.yaml open (#22083)

_distribution_metadata() reads the profile's distribution.yaml without
an explicit encoding, which defaults to the platform's locale encoding
— UTF-8 on POSIX, cp1252/mbcs on Windows. Files round-tripped between
hosts get mojibake on the Windows side.

Single-line fix: add encoding='utf-8' to the open() call. Matches the
sibling _read_config_model() site at line 398, which already does this.

Surfaces once PR #21561 lands the blocking ruff-check CI job
(PLW1514 — unspecified-encoding), but the underlying bug is
pre-existing on main.

hermes_cli/profiles.py

@@ -375,7 +375,7 @@ def _read_distribution_meta(profile_dir: Path) -> tuple:
         return None, None, None
     try:
         import yaml
-        with open(mf_path, "r") as f:
+        with open(mf_path, "r", encoding="utf-8") as f:
             data = yaml.safe_load(f) or {}
         if not isinstance(data, dict):
             return None, None, None