3703. Remove K-Balanced Substrings

You are given a string s consisting of '(' and ')', and an integer k. A string is k-balanced if it is exactly k consecutive '(' followed by k consecutive ')', i.e., '(' * k + ')' * k. For example, if k = 3, k-balanced is "((()))". You must repeatedly remove all non-overlapping k-balanced substrings from s, and then join the remaining parts. Continue this process until no k-balanced substring ex