ApexCharts.getSyncedCharts() and ApexCharts.getGroupedCharts() return wrong results

[hl037]

This piece of code https://github.com/apexcharts/apexcharts.js/blob/main/src/apexcharts.js#L578 :

/**
   * Get all charts in the same "group" (including the instance which is called upon) to sync them when user zooms in/out or pan.
   */
  getSyncedCharts() {
    const chartGroups = this.getGroupedCharts()
    let allCharts = [this]
    if (chartGroups.length) {
      allCharts = []
      chartGroups.forEach((ch) => {
        allCharts.push(ch)
      })
    }

    return allCharts
  }

  /**
   * Get charts in the same "group" (excluding the instance which is called upon) to perform operations on the other charts of the same group (eg., tooltip hovering)
   */
  getGroupedCharts() {
    return Apex._chartInstances
      .filter((ch) => {
        if (ch.group) {
          return true
        }
      })
      .map((ch) => (this.w.config.chart.group === ch.group ? ch.chart : this))
  }

Is obviously not at all doing what it claims to do.

I'll submit a PR to fix it.