[Feature] Clear search and show folder on navigating through group tree

[ArjenR]

Clear the search and search results and show group contents when the group is selected.

Expected Behavior

A user performs a search and the search results are displayed.

Upon selecting a group in the group tree, the search and search result are cleared and the contents of the
selected group is shown.

Current Behavior

The user clicks a group and then has to manually clear the search to show the group contents.

Context

I work a lot with different accounts for both myself and customers. Sometimes I need a specific one, a moment later I need the whole group. I then keep having to clear the search.

Debug Info

KeePassXC - Version 2.3.4
Revision: 6fe821c

Libraries:

• Qt 5.11.1
• libgcrypt 1.8.3

Operating system: Windows 10 (10.0)
CPU architecture: x86_64
Kernel: winnt 10.0.17134

Enabled extensions:

• Auto-Type
• Browser Integration
• Legacy Browser Integration (KeePassHTTP)
• SSH Agent
• YubiKey

[droidmonkey]

This is already implemented in #1797, expected for 2.4 release