[utils] js_to_json: Prevent false positives for octals (#15474)

Authored by: doe1080

yt_dlp/utils/_utils.py

@@ -2830,7 +2830,7 @@ def js_to_json(code, vars={}, *, strict=False):
         {STRING_RE}|
         {COMMENT_RE}|,(?={SKIP_RE}[\]}}])|
         void\s0|(?:(?<![0-9])[eE]|[a-df-zA-DF-Z_$])[.a-zA-Z_$0-9]*|
-        \b(?:0[xX][0-9a-fA-F]+|0+[0-7]+)(?:{SKIP_RE}:)?|
+        \b(?:0[xX][0-9a-fA-F]+|(?<!\.)0+[0-7]+)(?:{SKIP_RE}:)?|
         [0-9]+(?={SKIP_RE}:)|
         !+
         ''', fix_kv, code)