New page is stored for a space when inserted in the suggest

To reproduce, follow these steps:

• insert a new page for an existing space in the suggest, e.g. Blog.Photos
  The selection in the tree will move to "Add Page..." option under the Blog space and getSelectedSpace() = "Blog", getSelectedPage() = "Photos", isNewPage() = true
• change the selection in the explorer to "Main.Add Page...", for example
  getSelectedSpace() = "Main", getSelectedPage() = "", isNewPage() = true and suggest input is empty
• change the selection in the explorer to Blog.Add Page... element, by clicking it in the tree
  now, getSelectedSpace() = "Blog", getSelectedPage() = "Photos", isNewPage() = true and suggest input is empty

The selectedPage for the Blog space should not be stored to "Photos", it should be reset to "" when Add Page... is clicked.