Minor - Enter to activate the current Tree item

[Dreamer]

Currently, when using Tab key to go to Tree, sometimes the active item is activated, sometimes not.

I think the same behavior for all tree tabs (folders, favourites, categories) would be the best:

Do NOT activate the current tree item automatically, activate it manually with Enter (and perhaps also Space) key.

It's possible to activate it by down and up keys, but it's not so comfortable and the current behavior is not the same.