Multiple bug fixes

【Contents of the fix】
■Fixed a bug that prevented the use of “Product Category Compound Search” in the “Welcart Keyword Search” widget.
■【Mac】Fixed a bug in which the thickness of Japanese and European characters may be displayed differently when using some fonts.
■Optimized OGP tags.
■Fixed a bug in which, when using the WCEX DL Seller plug-in, the screen for proceeding with the membership procedure did not appear when trying to purchase a product with the billing type “recurring billing.
■Fixed some minor bugs.

The following files have been fixed in this update.
【Modified file】
admin/css/editor-style-02.css
admin/inc/welcart.php
functions/head.php
functions/ogp.php
functions/seo.php
languages/ja.mo
languages/ja.po
pagebuilder/assets/css/pagebuilder.css
style.css
wc_templates/cart/wc_customer_page.php
wc_templates/wc_search_page.php

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