`relay/generated-flow-types` not working with `useMutation` hooks

[zygopleural]

Code setup as follows:

...

import type { DashboardPageUserViewedDashboardMutation } from "./__generated__/DashboardPageUserViewedDashboardMutation.graphql"

...

export default function DashboardPage() {
  ...
  
  const [userViewedDashboardMutation] =
    useMutation<DashboardPageUserViewedDashboardMutation>(graphql`
      mutation DashboardPageUserViewedDashboardMutation {
        userViewedDashboard {
          viewedDashboard
        }
      }
    `)

  ...
  
}

...

Setting "relay/generated-flow-types": "error"

Gives the following issue:

I see a test case for the failure condition here https://github.com/relayjs/eslint-plugin-relay/blob/main/test/generated-typescript-types.js#L538-L552 but no corresponding passing condition test.

From what I can see in the source code here https://github.com/relayjs/eslint-plugin-relay/blob/main/src/rule-generated-flow-types.js#L567-L583 what I have should not be an issue.

Looks like this was added by @tyao1 via 3d1ebcd so maybe they can advise.