WIKI-762 [Migration] Failed to get version of wiki page due to session timeout. Backport to feature/stabilization.

Fix description
* Cache only wiki page UUID instead of wiki page object to avoid getting data from dead session
* Get page by UUID instead of querying page to improve the performance

Conflicts:
	wiki-service/src/main/java/org/exoplatform/wiki/rendering/cache/PageRenderingCacheService.java
	wiki-service/src/main/java/org/exoplatform/wiki/rendering/cache/impl/PageRenderingCacheServiceImpl.java
	wiki-service/src/main/java/org/exoplatform/wiki/service/impl/WikiServiceImpl.java