AMPforWP - Floating Button for AMP 1.0.10

* Resolved the issue of Notice: wp_register_style was called incorrectly. Scripts and styles should not be registered or enqueued until the wp_enqueue_scripts, admin_enqueue_scripts, or login_enqueue_scripts hooks. This notice was triggered by the amp_float_btn_admin_css handle.

* Resolved the issue of Button Icon of Pagebuilder Module (Core) not displaying at proper position.