use MroongaFullTextKey in erp5_full_text_mroonga_catalog.

bt5/erp5_full_text_mroonga_catalog/CatalogFullTextKeyTemplateItem/full_text_key_list.xml

-<key_list>
- <key>SearchableText</key>
- <key>full_text.SearchableText</key>
-</key_list>
\ No newline at end of file

bt5/erp5_full_text_mroonga_catalog/CatalogSearchKeyTemplateItem/search_key_list.xml

+<key_list>
+ <key>SearchableText | MroongaFullTextKey</key>
+ <key>full_text.SearchableText | MroongaFullTextKey</key>
+</key_list>
\ No newline at end of file

bt5/erp5_full_text_mroonga_catalog/bt/template_catalog_full_text_key_list

-SearchableText
-full_text.SearchableText
\ No newline at end of file

bt5/erp5_full_text_mroonga_catalog/bt/template_catalog_search_key_list

+SearchableText | MroongaFullTextKey
+full_text.SearchableText | MroongaFullTextKey
\ No newline at end of file