Update types to add missing arguments and return types

[cyrilf]

Fixing types

1️⃣

The dataLabels formatter can return an array. It will display both string on a separate line.
You can see this usage in this demo: Treemap color range

dataLabels: {
  ...
  formatter: function(text, op) {
    return [text, op.value]
  },
  ...
},

We can see further down in the code that the function is handling the case where text is an array:

apexcharts.js/src/modules/Graphics.js

Line 693 in 483c471

if (Array.isArray(text)) {

---

2️⃣

The tooltip y formatter, accepts a second arguments (like many other formatter). It's opts?: any and is missing.
This one fixes #4762

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• My changes generate no new warnings