Miscellaneous fixes (0.17 beta) (#21867)

* Adjust title prompt to have less rigidity

* Improve motion boxes handling for features that don't require motion

* Improve handling of classes starting with digits

* Improve vehicle nuance

* tweak lpr docs

* Improve grammar

* Don't allow # in face name

* add password requirements to new user dialog

* change password requirements

* Clenaup

---------

Co-authored-by: Josh Hawkins <32435876+hawkeye217@users.noreply.github.com>

frigate/util/builtin.py

@@ -129,7 +129,9 @@ def get_ffmpeg_arg_list(arg: Any) -> list:
     return arg if isinstance(arg, list) else shlex.split(arg)
 
 
-def load_labels(path: Optional[str], encoding="utf-8", prefill=91):
+def load_labels(
+    path: Optional[str], encoding="utf-8", prefill=91, indexed: bool | None = None
+):
     """Loads labels from file (with or without index numbers).
     Args:
       path: path to label file.
@@ -146,11 +148,12 @@ def load_labels(path: Optional[str], encoding="utf-8", prefill=91):
         if not lines:
             return {}
 
-        if lines[0].split(" ", maxsplit=1)[0].isdigit():
+        if indexed != False and lines[0].split(" ", maxsplit=1)[0].isdigit():
             pairs = [line.split(" ", maxsplit=1) for line in lines]
             labels.update({int(index): label.strip() for index, label in pairs})
         else:
             labels.update({index: line.strip() for index, line in enumerate(lines)})
+
         return labels