Narrow $callback type for register_activation/deactivation/uninstall_hook()

[IanDelMar]

The $callback parameter of register_activation_hook(), register_deactivation_hook(), and register_uninstall_hook() is added to:

• Activation: do_action("activate_{$plugin}", bool $network_wide) - reference
• Deactivation: do_action("deactivate_{$plugin}", bool $network_deactivating) - reference
• Uninstall: do_action("uninstall_{$file}") - reference

Accordingly, the callable types are narrowed to:

• Activation: callable(bool): void
• Deactivation: callable(bool): void
• Uninstall: callable(): void

[szepeviktor]

Don't we need parens?
@phpstan-param (callable(bool): void) $callback

[IanDelMar]

No: https://phpstan.org/r/91ab018f-1be8-43c6-b571-67faa06d577d