fix(unitframes): weapon enchant swipe not hiding duration swipe

[JuJuFX-dev]

What does this PR do?

Turning off "Show Duration Swipe" on the Player Aura Bars buff bar now also turns it off on the Weapon Enchants cells. Until now the toggle left the oil and imbue icons with a dark cooldown wedge that sat frozen for the entire duration of the enchant, or with no swipe at all, depending on the pass.

The cells gated the swipe with Cooldown:SetShown alone, and PaintContent's SetCooldown re-shows the frame in the same pass. A cooldown started while the frame was hidden then renders a wedge that never advances, so which of the two writes landed last for a given button decided what the player saw. The gate now uses persistent cooldown style instead: SetDrawSwipe plus alpha 0 on the cooldown frame, change-guarded, applied both from ApplyStyle and from PaintContent so a toggle flipped during combat still lands. SetShown stays in the out-of-combat path, because Show/Hide is blocked on the secure trio's descendants. As a side effect the finish bling on the enchant icons is suppressed as well while the swipe is off.

Second fix in the same area: RestyleBars now pokes WeaponEnchants_Layout. AK.RestyleSoon only reaches engine buttons, so the callers that restyle without ApplyLiveConfig (global font and outline changes, profile switches and spec-override swaps through the _EUF_ReloadFrames tail) left the enchant cells rendering with the previous profile's style.

How was it tested?

Tested in game on the live client.

Checklist

• New settings default OFF (no behavior change without opt-in) - N/A, no new setting; this makes an existing per-bar toggle work on the enchant cells
• Zero cost while disabled: no events registered, no polling, no hooks doing work, no frames built
• Cheap while enabled: event-driven (no polling, no timer-based logic, no per-frame allocations) - the gate is change-guarded, so a steady state costs one boolean compare per button per paint
• No writes onto Blizzard-owned frames (weak-table pattern used); HookScript/hooksecurefunc only, never SetScript on Blizzard frames
• Tested in-game on live; no version gates or pre-Midnight APIs added