Remove a type error from renderer.js
Remove a type error from renderer.js

This causes type invalidations on `string` see go/disambiguation-errors#invalidating-types

I don't believe this is very harmful but it is easy to fix and this error is distracting when going through the debugging process for other disambiguation errors.
RELNOTES: n/a
PiperOrigin-RevId: 390247610
Change-Id: Ibd9e7e94b6dc784e8e647b2efe93ea43b30cbaa4

google/closure-library,google/closure-library,google/closure-library,google/closure-library,google/closure-library