script: Add a Constraint DOMException for IndexedDB (#37605)

Add Constraint DOMException to handle the name conflict error in
`IDBDatabase::createObjectStore` method.

Testing: `./mach test-wpt tests/wpt/tests/IndexedDB/`, but it seems
there are many test failures even in main branch already ([related
comment](https://github.com/servo/servo/pull/37605#issuecomment-2993889163)).
Fixes: #37571

---------

Signed-off-by: iamlockon <xdddxyyyxzzz123@gmail.com>

components/script/dom/domexception.rs

@@ -57,6 +57,7 @@ pub(crate) enum DOMErrorName {
     NotReadableError,
     OperationError,
     NotAllowedError,
+    ConstraintError,
 }
 
 impl DOMErrorName {
@@ -92,6 +93,7 @@ impl DOMErrorName {
             "NotReadableError" => Some(DOMErrorName::NotReadableError),
             "OperationError" => Some(DOMErrorName::OperationError),
             "NotAllowedError" => Some(DOMErrorName::NotAllowedError),
+            "ConstraintError" => Some(DOMErrorName::ConstraintError),
             _ => None,
         }
     }
@@ -156,6 +158,9 @@ impl DOMException {
                 r#"The request is not allowed by the user agent or the platform in the current context,
                 possibly because the user denied permission."#
             },
+            DOMErrorName::ConstraintError => {
+                "A mutation operation in a transaction failed because a constraint was not satisfied."
+            },
         };
 
         (