Fix the clamp helper for a list of values

An AI wrote a clamp helper that keeps every value inside a range. It is short enough to look obviously right, which is exactly when a reading misses the forgotten case. Your team checks it against a written contract instead.

An assistant wrote clamp_values(values, low, high). It is in the editor. It has a bug. Find it and fix it.

Input and output:

• values: a list of integers.
• low, high: the two bounds of the range, as integers.
• Return a new list with each value clamped, in the same order.

Rules the tests check:

• If low is greater than high, the bounds came in the wrong order: swap them, so the range runs from high to low.
• The range includes both bounds. A value inside it, or equal to a bound, stays as it is.
• A value below the range becomes the lower bound. A value above it becomes the upper bound.
• An empty list returns an empty list.