fix: funbox deselection not clearing effects without refresh (@prajith5)

[prajith5]

Fixes an issue where Funbox effects remained active internally after being
deselected until a page refresh.

This change compares the previous and next activation state of a Funbox
and ensures:

• clearGlobal() is called when a Funbox is deselected
• applyGlobalCSS() is called only when a Funbox is activated

This guarantees Funbox effects reset immediately without requiring a refresh.

Fixes #7468

[Miodec]

This PR doesn't seem to fix the issue

[Copilot]

Pull request overview

This PR fixes a critical bug where funbox effects remained active internally after deselection until page refresh (issue #7468).

Changes:

• Fixed setFunbox() to call clearGlobal() on removed funboxes when switching between funbox sets
• Fixed toggleFunbox() to properly track activation state transitions and call clearGlobal() when deactivating and applyGlobalCSS() when activating
• Refactored forced config logic in activate() for better readability with explicit type checking

[Copilot]

The setFunbox() function clears removed funboxes but doesn't apply global CSS for newly activated funboxes. When switching from one set of funboxes to another (e.g., from ["nausea"] to ["upside_down"]), the new funbox's applyGlobalCSS() is never called, which could leave it in an incomplete state.

Consider adding logic to detect newly activated funboxes and call their applyGlobalCSS() function, similar to how toggleFunbox() handles this on line 76.

Suggested change

	setConfig("funbox", funbox);
	setConfig("funbox", funbox);
	const currentFunboxes = getActiveFunboxNames();
	const addedFunboxes = currentFunboxes.filter(
	(fb) => !previousFunboxes.includes(fb),
	);
	for (const fb of addedFunboxes) {
	get(fb).functions?.applyGlobalCSS?.();
	}

[Copilot]

The changes to toggleFunbox() and setFunbox() fix a critical bug but lack test coverage. Consider adding tests that verify:

1. clearGlobal() is called when a funbox is deselected
2. applyGlobalCSS() is called when a funbox is selected
3. Multiple funbox effects are properly cleared when switching between different sets

This would prevent regression of the issue described in #7468.