Function isPropertyPathPrefix

isPropertyPathPrefix(prefix: PropertyPath, path: PropertyPath): boolean
Determines whether one property path is an exact structural prefix of another.

Both property paths are compared after normalization. Segment comparison follows native Map / SameValueZero semantics: strings compare by value, symbols by identity, 0 equals -0, and numeric NaN segments compare as equal. Numeric and string segments remain distinct.

Invalid path values return false rather than throwing, matching predicate conventions.
Parameters
- prefix: PropertyPath
  Candidate prefix path.
- path: PropertyPath
  Complete path that must equal or descend from prefix.
Returns boolean
Whether prefix is an exact structural prefix of path.