Issue #490 - Fix toggle weird behavior in Filter Lists

Relegating data-action from <button> to its parent <io-toggle> fixes such issue, although I have some concerns about the side effects and I would love to hear opinions from knowledgeable people in the project. At the moment, the only one I was able to notice was that <button> won't have a data-action attribute because it was taken from this.action which won't exist anymore.