Revert automatic grep job execution from Find in Files history

Summary:
- raise of output view is suppressed for jobs from history
- only search parameters are displayed, actual search can be
  redone with "Refresh"
- population of list is still deferred until all projects
  are loaded to ensure correct display of search description

BUG: 384899

Test Plan:
- on restart no search is performed, but can be triggered by "Refresh"
- output view stays closed on startup

Reviewers: #kdevelop, brauch

Reviewed By: #kdevelop, brauch

Subscribers: brauch, kdevelop-devel

Differential Revision: https://phabricator.kde.org/D7945

(cherry picked from commit b9904391)