Enforce removal of events on addEventListener

[fregante]

Every addEventListener must be followed by a removeEventListener or else they'll be left behind and cause hard-to-debug issues:

• Cleanup widgets and side effects on context invalidated (reload, update) pixiebrix-extension#4258

Enforcing removeEventListener might be difficult, but requiring a signal could be done via types. For example:

addEventListener(
	type: string,
	listener: EventListenerOrEventListenerObject,
-	options?: boolean | AddEventListenerOptions
+	options: AddEventListenerOptions & {signal: AbortSignal}
): void;

Or just via no-restricted-syntax.

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The most recent issue I found was this listener, left behind between reloads:

https://github.com/pixiebrix/pixiebrix-extension/blob/4878e51b4466cf6d628b5085c6ac964510a924f4/src/contentScript/selectionTooltip/tooltipController.tsx#L281-L299