fix(fxLayoutGap): not working with dynamic fxHide

[CaerusKaru]

No description provided.

[CaerusKaru]

The root cause analysis on this is tricky. The reason this happens is that the fxLayoutGap doesn't pick up changes to the show-hide value, because show-hide hasn't fired yet. So instead it picks up the old value.

Therefore we need to devise a method in which dynamic changes trigger new updates correctly. Maybe not tricky, but potentially tedious.

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