The "store filter" admin feature is broken

[leehart]

Samples & Variants > Start > Open a table: Variants
Add filter > "Store as..."
See a blank screen and a console error log:

Uncaught TypeError: this.storedFilterNameField.focus is not a function
    at Object.componentDidUpdate (QueryPicker.js:79)
    at commitLifeCycles (react-dom.development.js:14693)
    at commitAllLifeCycles (react-dom.development.js:15905)
    at HTMLUnknownElement.callCallback (react-dom.development.js:145)
    at Object.invokeGuardedCallbackDev (react-dom.development.js:195)
    at invokeGuardedCallback (react-dom.development.js:248)
    at commitRoot (react-dom.development.js:16075)
    at completeRoot (react-dom.development.js:17463)
    at performWorkOnRoot (react-dom.development.js:17391)
    at performWork (react-dom.development.js:17295)