When persistSettings of RuntimeTag is false, it still saves portletName related portletPreferences data to portletpreferences table

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: Master
• Fix Version/s: 7.4.3.7 CE GA7, 7.4.13 DXP U3, 7.4.3.32 CE GA32, 7.4.3.33 CE GA33, Master
• Component/s: Core Infrastructure
• Labels:
  • liferay-update-dxp-3-7413
• Fix Priority: 3
• Git Pull Request: https://github.com/liferay-core-infra/liferay-portal/pull/102

Description:
I will use <liferay-portlet:preview> tag to expose the issue. Because the tag invokes <liferay-portlet:runtime> and persistSettings property is false by default . Using <liferay-portlet:preview> tag, it shouldn't save portletName related portletPreferences data to the database.

Reproduction Steps:
1. Place the below code to modules\apps\journal\journal-content-web\src\main\resources\META-INF\resources\view.jsp

<liferay-portlet:preview
	portletName="<%= "com_liferay_blogs_web_portlet_BlogsPortlet" %>"
	showBorders="<%= true %>"
/>

2. Deploy the module journal-content-web.
3. Create one widget page "page1"
4. Add Web Content Display portlet to "page1"

Expected result: no "com_liferay_blogs_web_portlet_BlogsPortlet" entry is created in the portletpreferences table.
Actual result: an "com_liferay_blogs_web_portlet_BlogsPortlet" entry is created in the portletpreferences.