[Clippy] Swap manual_while_let_some to use diagnostic items instead of paths

compiler/rustc_span/src/symbol.rs

@@ -1366,6 +1366,8 @@ symbols! {
         optin_builtin_traits,
         option,
         option_env,
+        option_expect,
+        option_unwrap,
         options,
         or,
         or_patterns,
@@ -2092,8 +2094,10 @@ symbols! {
         vec_as_mut_slice,
         vec_as_slice,
         vec_from_elem,
+        vec_is_empty,
         vec_macro,
         vec_new,
+        vec_pop,
         vec_with_capacity,
         vecdeque_iter,
         version,