Step definition could be injected to another step definition like fixture.

Now it's useless when there is searching by predicate

[gui-test] IDEA-CR-34414 GUI-126 Refactored wrappers around JTree to support searching by predicate and clicking without specifying the path twice

* The only usage in plugins is API Comparator, and it is broken long time ago.

* no custom implementations of `DiffContent` are left, so we can rely
  on default logic for `getNavigatable`, `getFile` and `getLineSeparator`

* All usages in plugins are using constructor,
  that was removed in 89a0440a

* the only usages are from MergeRequest

* the only usage of `SCROLL_TO_LINE` was in diff from annotations,
  and it is already migrated to the new API

* the only usage of `setBottomComponentFactory` was in commit dialog,
  and it is already migrated to the new API

* `discloseRequest` implementation is trivial after removing `addOtherLayer`

* the only usage of `addOtherLayer` was in SVN properties,
  and it is already migrated to the new API

Reverted a part of the fix for IDEA-190436.

Key differences with the VcsLogProjectTabsProperties:
1. Application storage is used, so user settings are the same independently of the project from which a repository is opened.
2. Recent filter values are stored per-tab, since each tab shows a different repository.