Fix dropdown button loading indicator to work with livewire event modifiers

[howdu]

Allow wire:click.stop events to work with dropdown.

[what-the-diff]

PR Summary

• Merging wire:target and wire:click attributes
  The two attributes are combined into a single attribute for better efficiency and easier management.
• Improved loading indicator target selection
  The loading indicator now prioritizes wire targets or clicks, followed by forms (if available), making the user experience more seamless.

[zepfietje]

Thanks for the PR, @howdu!
Is this behavior already supported on other components like buttons?

[howdu]

No but I've applied this to the other components now too.