509. Maximum Overlapping Meeting Count

Given a list of meeting time intervals where each interval is represented as a list [start, end], determine the maximum number of meetings occurring at the exact same time. If a meeting ends at the same time another begins, they are not considered overlapping.

Example:
Input: intervals = [[1, 5], [2, 6], [8, 10], [5, 8]]
Output: 2

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