We shouldn't add a data-snippet in the declaration of a snippet,
as they are meant to be drag & dropped, the editor/right panel is going
to add that for you. We generally add them when we copy paste a snippet
definition into another view directly in our sources (ie: template)
Ref: https://github.com/odoo/odoo/pull/87059#discussion_r866903584
Part-of: odoo/odoo#95940
Removed unnecessary classes and replaced bootstrap classes with inline
styles.
Removed `.btn-block` classes because it isn't an option supported
by the builder.
The `<li>`'s `.list-group-item` class overrides the design-tab's text
color. For this particular case, the list elements have a `<p>` added
around the text.
When selecting text inside the second block's list and backspacing,
the line would become purple and impossible to remove. This was probably
due to the text being inside a <span> inside a <p> (this issue isn't
present in the first block which only contains <p> elements).
Part-of: odoo/odoo#95940