aMuleGUI - Improvements to search history clearing behavior #697

Currently, the search history (pull down history) is completely wiped when clicking "Reset Fields".
Also the last search keyword is still kept with auto-completion, after wiping, even though it does not show up in the pull-down menu.

Proposal:

1. Only clear the Name field, not the entire search history, when clicking "Reset Fields".
2. Add an option to the right-click menu of the Name field to clear the search history.
3. Also clear the auto-complete history when the history is cleared.

aMuleGUI 3.0.1-335 on Windows 11 x64
aMuleD develop image 07/27 on Docker Linux 29.6.2