Fixed multiple bugs

【Contents of fix】
■Fixed a bug in the content builder of the top page of the TCD theme options, in the “Annual Events” content, the schedule to be displayed can be selected either “Current month schedule” or “Latest schedule”.
■Fixed the bug that the style setting of the loading screen is not reflected in the fixed page.

Fixed a bug that the style setting of the load screen was not reflected in the fixed page.
【Modified file】
admin/inc/contents-builder.php
inc/load-icon.php
languages/ja.mo
languages/ja.po
style.css
template-parts/contents-builder.php