a logical issue: all overlapping features and  peaks have a zero distance

Hello @GuangchuangYu,
    Please check the logic for https://github.com/YuLab-SMU/ChIPseeker/blob/devel/R/getNearestFeatureIndicesAndDistances.R#L141-L151. Based on my understanding, if `ignoreOverlap == FALSE`, the code block will always run and override the results from `if (overlap = "all") { } block`.

Haibo