Category filter not updating the badge order or position

[MattOpen]

When choosing a category filter badge, then all items were correct filtered.
But the badge placement of icon in timeline spine were not updated.
I guess a refresh after click to a category would help.

[MattOpen]

The category filter was hiding items correctly but the two-column layout wasn't recalculating for the remaining visible items. Three things were wrong:

Stale left/right assignments — visible items kept their original mo-inverted classes after filtering, so refresh() read wrong offsetTop values and placed items on the same side of the spine.
→ Fix: reset mo-inverted/mo-offset on visible items only before calling refresh().

Hidden items polluting the column algorithm — _setPostPosition and the prevAll selectors in _getLeftOrRight were including display:none items (which report offsetTop: 0), producing wrong left/right decisions.
→ Fix: skip filtered-out items in _setPostPosition and exclude them from prevAll selectors.

Badge overlap — the mo-offset check (which pushes a badge down to avoid center-line collision) used previousElementSibling which could be a hidden item with offsetTop: 0, so the check always failed and two badges landed on the same spot.
→ Fix: walk backwards past filtered-out siblings to find the nearest visible one.