Add actions to toasts

[calebporzio]

The scenario

Toasts can link somewhere, but they cannot currently expose a compact action such as Undo or Retry. The toast also lives outside the Livewire component that opened it, so the action needs a transport that another component can receive.

The proposal

Support one action per toast. An action may dispatch a bubbling browser event with parameters, or render as a real link. The existing close button remains the second affordance.

The solution

This adds the public PHP action option and the recovered Flux toast-action chrome. The Flux Pro companion PR supplies the runtime behavior, and the Livewire companion PR lets a listener request preserve the action button as its loading origin.

The generated lite bundle and manifest are included.

Coordinated PRs

• Add actions to toasts #2791 — public API and toast markup
• livewire/flux-pro#567 — action runtime and browser coverage
• Preserve browser event origins for listener requests livewire#10648 — cross-component request loading origin
• livewire/flux-docs#211 — documentation and interactive example

Verification

• Flux Pro toast browser suite: 18 passed
• End-to-end playground verified event dispatch, cross-component loading, and dismissal after completion