fix: allow beforeTooltipDraw to be cancelable

[GrantHynd]

Resolves #10581

[GrantHynd]

I will put together a quick example in a bit, but I confirmed the change works locally.

[GrantHynd]

Was going to link to a code sandbox example, but I can not seem to be able to reference my Github branch. Is there a recommended way to share remote example implementations of branches? Or is it always a case of locally pulling?

• https://codesandbox.io/s/base-line-chart-test-uimhhi?file=/package.json

[stockiNail]

@GrantHynd maybe we should change the type definition of the hook as well, adding , cancelable: true }

Chart.js/types/index.d.ts

Lines 2573 to 2582 in 3df687a

	/**
	* @desc Called before drawing the `tooltip`. If any plugin returns `false`,
	* the tooltip drawing is cancelled until another `render` is triggered.
	* @param {Chart} chart - The chart instance.
	* @param {object} args - The call arguments.
	* @param {Tooltip} args.tooltip - The tooltip.
	* @param {object} options - The plugin options.
	* @returns {boolean} `false` to cancel the chart tooltip drawing.
	*/
	beforeTooltipDraw?(chart: Chart, args: { tooltip: Model }, options: O): boolean | void;

[LeeLenaleee]

As @stockiNail pointed out, the typings need an update

[GrantHynd]

👍 will update that today.