Render Bard's "Strike" mark by default

[billmn]

Bug Description

If you use the "strike" button in a Bard, the tag <s> was not rendered on the template.

HTML source in the Bard:

Template render:

Template code

{{ description }}
    {{ if type == 'text' }}
        <div class="paragraph">{{ text }}</div>
    {{ /if }}
{{ /description }}

To fix this I have added Augmentor::addMark(Strike::class) in the boot method of AppServiceProvider but i think it should be provided as default.

Statamic version: 3.0.12