pgAdmin 4 commit: Fixes the arrow key issue in the preferences tree. Fi

Fixes the arrow key issue in the preferences tree. Fixes #7274
Ensure that the select folder dialog should be on top when selecting the binary path. Fixes #7276

Branch
------
master

Details
-------
https://git.postgresql.org/gitweb?p=pgadmin4.git;a=commitdiff;h=74c620e478f1a42c4b238940626db53b255f9ec2
Author: Nikhil Mohite <nikhil.mohite@enterprisedb.com>

Modified Files
--------------
.../static/js/components/PreferencesComponent.jsx  |  21 +++++++++++++++------
web/pgadmin/static/js/tree/tree.js                 |   2 +-
web/pgadmin/static/scss/_alertify.overrides.scss   |   2 +-
.../high_contrast/high_contrast_preview.png        | Bin 57572 -> 42906 bytes
4 files changed, 17 insertions(+), 8 deletions(-)