ECMS-6079: [CLV] NPE when clicking on Add Property/Node Type button in Search Form

Problem analysis:
* UIContentSelectorOne class only exists in SCV's Content Search Form.
  In case of CLV, it must be UIContentSelectorMulti component.

Fix description:
* Use UIContentSelector instead of UIContentSelectorOne.

Conflicts:
	core/webui/src/main/java/org/exoplatform/wcm/webui/selector/content/UIContentSearchForm.java