property-will-be-overwritten-by-spread error is issued multiple times

[sandersn]

interface XX {
    paddingLeft: string;
}

declare var x: XX
declare function clonElement<Q>(props?: object): void;
clonElement({ style: {
    paddingLeft: 'hi',
    ...x
}})

Expected behavior:
One error on paddingLeft: 'hi': 'paddingLeft' is specified more than once, so this usage will be overwritten.

Actual behavior:
Two errors.

Our old commit of ant-design issues this error 8 times. This is probably just a result of (1) not caching the type from checking object literals (2) checking object literals multiple times during resolveCall.

Not high priority -- I'm not sure it's observable from VS Code -- and probably expensive to fix, depending on whether the reason that we decided to not cache object literal types is still true.