プラグインや決済モジュールで require している *_Ex クラスを追加

[nanasess]

refs #684

以下を追加

• data/class_extends/page_extends/shopping/LC_Page_Shopping_Payment_Ex.php
• data/class_extends/page_extends/shopping/LC_Page_Shopping_LoadPaymentModule_Ex.php
• data/class_extends/SC_Display_Ex.php

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 49.94%. Comparing base (5bde38e) to head (b29fe59).
Report is 5 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1110   +/-   ##
=======================================
  Coverage   49.94%   49.94%           
=======================================
  Files          82       82           
  Lines       10480    10480           
=======================================
  Hits         5234     5234           
  Misses       5246     5246           

Flag	Coverage Δ
tests	49.94% <ø> (ø)

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[seasoftjapan]

require_once CLASS_EX_REALDIR . 'page_extends/shopping/LC_Page_Shopping_Payment_Ex.php'; の有無にかかわらず、LC_Page_Shopping_Payment_Ex をインスタンス化できることを確認した。