Change elemental status chest effects to variants of explosion

[hollow gorge]

As it stands now, some properties on the page are grouped into one slot, while some are singular and mutually exclusive with others. To reduce confusion and clutter, I think the chest opening effects should be relegated to a single property slot, similar to the wings/balloon/swim-ring property.

[ashen oxide]

I'd say to group the direct statuses together, but leave explosion alone in case it can be grouped with #1355339975973142832