The GraphQL query for the MR popover failes on the frontend

The GraphQL query for MR popovers fails with this error in the console:

GraphQL execution errors for query 'mergeRequest' console.js:32
    e console.js:32
    value vue-apollo.esm.js:626
    value vue-apollo.esm.js:876
    y Observable.js:134
    v Observable.js:165
    value Observable.js:224
    error bundle.esm.js:390
    error bundle.esm.js:390
    queryListenerForObserver bundle.esm.js:1191
    s tslib.es6.js:97
    s tslib.es6.js:78
    s tslib.es6.js:71
    L es.promise.js:223
    s tslib.es6.js:67
    queryListenerForObserver bundle.esm.js:1147
    broadcastQueries bundle.esm.js:1627
    broadcastQueries bundle.esm.js:1626
    broadcastQueries bundle.esm.js:1621
    next bundle.esm.js:1719
    s tslib.es6.js:97
    s tslib.es6.js:78
    s tslib.es6.js:71
    L es.promise.js:223
    s tslib.es6.js:67
    next bundle.esm.js:1676
    y Observable.js:130
    v Observable.js:165
    value Observable.js:219
    next dedupLink.js:60
    next dedupLink.js:60
    y Observable.js:130
    v Observable.js:165
    value Observable.js:219
    next bundle.esm.js:85
    next bundle.esm.js:85
    next bundle.esm.js:83
    y Observable.js:130
    v Observable.js:165
    value Observable.js:219
    batchHandler bundle.esm.js:74
    s es.promise.js:103
    G es.promise.js:120
    i microtask.js:26
Object { message: "Type mismatch on variable $mergeRequestIID and argument iid (ID! / String)", locations: (1) […], fields: (4) […] }
console.js:32
Unhandled promise rejection undefined console.js:32
TypeError: e.project is undefinedmr_popover.vue:75

I think this might be caused by https://gitlab.com/gitlab-org/gitlab-ce/issues/62650. Which changed the type of the iid field from ID to String. I think this should be a matter of updating the type on the frontend