Add option to disable the idle action of sitting floor

Add an option to disable the idle action of sitting on the ground: After disabling this option in the software's "Settings > Models" menu, the character model will no longer perform the idle action of sitting on the ground.
Add an option to include current time in reminder text: After disabling this option in the software's "Settings > Models" menu, the reminder text will no longer include the current time
Fix the issue of one-sided rendering for default character model clothing.