fix(parser): Allow exclusive to override required_*

There are other cases for `required` that aren't being handled
- Groups
- Conflicts

I'm concerned there might be weird corner cases and didn't want the
analysis for that to block fixing this.

Fixes #5507

clap_builder/src/parser/validator.rs

@@ -335,7 +335,7 @@ impl<'cmd> Validator<'cmd> {
                 required = true;
             }
 
-            if required {
+            if !is_exclusive_present && required {
                 missing_required.push(a.get_id().clone());
                 if !a.is_last_set() {
                     highest_index = highest_index.max(a.get_index().unwrap_or(0));

tests/builder/conflicts.rs

@@ -721,7 +721,7 @@ fn exclusive_with_required_unless_present() {
 
     cmd.clone()
         .try_get_matches_from(["bug", "--exclusive"])
-        .unwrap_err();
+        .unwrap();
 }
 
 #[test]
@@ -761,7 +761,7 @@ fn exclusive_with_required_unless_present_any() {
 
     cmd.clone()
         .try_get_matches_from(["bug", "--exclusive"])
-        .unwrap_err();
+        .unwrap();
 }
 
 #[test]
@@ -801,7 +801,7 @@ fn exclusive_with_required_unless_present_all() {
 
     cmd.clone()
         .try_get_matches_from(["bug", "--exclusive"])
-        .unwrap_err();
+        .unwrap();
 }
 
 #[test]