generated-flow-types doesn't report invalid imports

[mrtnzlml]

Hello, my colleague discovered that incorrect Relay imports are not reported as expected. Failing test (well, should be failing but it's not):

{
  code: `
    import type {invalid as MyComponent_user} from './__generated__/MyComponent_user.graphql'
    class MyComponent extends React.Component<{user: MyComponent_user}> {
      render() {
        return <div />;
      }
    }

    createFragmentContainer(MyComponent, {
      user: graphql\`fragment MyComponent_user on User {id}\`,
    });
  `,
  errors: [
    {
      message: 'TODO: invalid type imported'
    }
  ]
},

Notice that the imported type invalid as MyComponent_user doesn't exist. In fact, this rule doesn't require the import at all and it is happy even if you delete the import type line completely. Seems like it takes into account only the property name used in props definition but not the imports. I believe this is not intended and it's a bug because seems like there are tests to cover this but they don't work as I would expect - the import is irrelevant for them:

eslint-plugin-relay/test/test.js

Lines 232 to 233 in 267d5e6

	import type {MyComponent_user} from './__generated__/MyComponent_user.graphql'
	class MyComponent extends React.Component<{user: MyComponent_user}> {

cc @kassens, thanks for checking it and confirming/rejecting it