Bad import taints analysis metadata

[mfikes]

$ plk
ClojureScript 1.10.520
cljs.user=> (import '(goog Uri))
nil
cljs.user=> (ns-imports 'cljs.user)
{Uri #object[Function]}
cljs.user=> (import '(goog.net Url))
Execution error (ExceptionInfo) at (<cljs repl>:1).
No such namespace: goog.net.Url, could not locate goog/net/Url.cljs, goog/net/Url.cljc, or JavaScript source providing "goog.net.Url"
cljs.user=> (ns-imports 'cljs.user)
Execution error (Error) at (<cljs repl>:1).
undefined is not an object (evaluating 'goog.net.Url')

The above (where ns-imports no longer works) doesn't happen in JVM ClojureScript.

[mfikes]

cljs.user=> (get-in @cljs.env/*compiler* [:cljs.analyzer/namespaces 'cljs.user :imports])
{Uri goog.Uri, Url goog.net.Url}