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/bindings/error.rs

@@ -98,6 +98,7 @@ pub(crate) fn throw_dom_exception(
         Error::Operation => DOMErrorName::OperationError,
         Error::NotAllowed => DOMErrorName::NotAllowedError,
         Error::Encoding => DOMErrorName::EncodingError,
+        Error::Constraint => DOMErrorName::ConstraintError,
         Error::Type(message) => unsafe {
             assert!(!JS_IsExceptionPending(*cx));
             throw_type_error(*cx, &message);