LPS-43531 - Residual close button displayed on mobile device when close the login dialog

Hey @brianchandotcom,

Attached is an update for http://issues.liferay.com/browse/LPS-43531.

NOTE: I only backported https://issues.liferay.com/browse/LPS-44087 since that is the only one support has asked for.  I have sent this backport to liferay-portal-ee/ee-6.2.x at https://github.com/brianchandotcom/liferay-portal-ee/pull/4153.

Please let me know if you have any questions.  Thanks!