Remove Copy trait for enum Operator (#9378)

In this commit, the Copy trait has been removed from Operator. This
change was necessary due to the value of operator may wish to attach a
motion type, which is not compatible with the Copy trait.

All instances where Operator was previously copied have been updated to
use the clone() or cloned() method instead. This includes function
parameters, variable assignments, and closures.

crates/vim/src/test/vim_test_context.rs

@@ -124,7 +124,7 @@ impl VimTestContext {
 
     pub fn active_operator(&mut self) -> Option<Operator> {
         self.cx
-            .read(|cx| cx.global::<Vim>().state().operator_stack.last().copied())
+            .read(|cx| cx.global::<Vim>().state().operator_stack.last().cloned())
     }
 
     pub fn set_state(&mut self, text: &str, mode: Mode) {