Backport (7.8) - IE8: Channelmanager throws error on conditional comments

The channelmanager throws an Iframe error in Internet Explorer 8 when the DOM tree of the site to render is too large.
Trying to click the error away via 'cross' or 'ok' button renders the page again and the error is thrown again as well, thus forming an infinite loop.

According to Mathijs den Burger this can be fixed in the surfandedit.js

The Error that is shown in IE8 channelmanager when DOM tree is too large:
lock
lock
_requestHstMetaData http://’hostname’/site/_cmsinternal
hstMetaDataResponse: url:http://’hostname’/site/_cmsinternal, pageId:e8b86349-615e-4451-8b1f-c9e19c6bc648, mountId:be2f7abc-6f76-4c25-81e4-407618447e95
iframe-to-host[1] iframeloaded
host-to-iframe[3] init
iframe-to-host[1] exception
Fout opgetreden in het iframe, kanaal wordt opnieuw geinitialiseerd. Error initializing manager.
Error: Onvoldoende opslagruimte beschikbaar om deze bewerking te voltooien.

_buildOverlay
host-to-iframe[1] buildoverlay
pageContextInitialized
_complete
Adding view toolbar plugin 'org.onehippo.cms7.channelmanager.templatecomposer.deviceskins.DeviceManager' before template-composer-toolbar-fullscreen-button
host-to-iframe[1] hideoverlay
host-to-iframe[1] showlinks