Replace interface{} with any type alias

This change maintains full backward compatibility while adopting
modern Go type alias conventions for better code clarity.

Signed-off-by: Xiaobo Liu <cppcoffee@gmail.com>

internal/taskloop/taskloop.go

@@ -116,6 +116,6 @@ func (l *Loop) Deadline() (deadline time.Time, ok bool) {
 }
 
 // Value is not supported for task loops.
-func (l *Loop) Value(interface{}) interface{} {
+func (l *Loop) Value(any) any {
 	return nil
 }