update addEventListener in secureCreatives.js to window.addEventListener

[vkimcm]

Description

addEventListener in listenMessagesFromCreative function in secureCreatives.js might need to be changed to window.addEventListener. We had some issues where request_ad messages from safeframe creatives where not being received, causing big discrepancies, and this update fixed the issue. (especially with connatix javascript)

Other information

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[bretg]

@vkimcm - I would suggest going ahead and making a code PR for this.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.