fix(browser-caps): use a for-loop for ie11
fix(browser-caps): use a for-loop for ie11

lib-jitsi-meet does not get polyfilled for es6 methods.
Using Array.prototype.find will cause breakages in older
browsers, like ie11. The quick fix for now is changing
the find call to be a for-loop. The long term fix will
be discussed soon.

damencho/lib-jitsi-meet,jiyeyuran/lib-jitsi-meet,jitsi/lib-jitsi-meet,jitsi/lib-jitsi-meet,nevermind-corp/ljm