Require at least chartjs v3.7

[LeeLenaleee]

Remove todo for V2.

Although not sure if we want it to be minimal 3.7 because of the bugfix or 3.8 if we want to remove this todo as wel:

chartjs-plugin-annotation/src/helpers/helpers.canvas.js

Lines 7 to 18 in 70078cc

	/**
	* Determine if content is an image or a canvas.
	* @param {*} content
	* @returns boolean|undefined
	* @todo move this function to chart.js helpers
	*/
	export function isImageOrCanvas(content) {
	if (content && typeof content === 'object') {
	const type = content.toString();
	return (type === '[object HTMLImageElement]' || type === '[object HTMLCanvasElement]');
	}
	}

[stockiNail]

Although not sure if we want it to be minimal 3.7 because of the bugfix or 3.8 if we want to remove this todo as wel:

In my opinion, I will leave the function in the plugin till the function will be available and released in chartjs.