[PATCH] KFileWidget: Fix key navigation escaping in save dialogs

[PATCH] KFileWidget: Fix key navigation escaping in save dialogs

In save dialogs the keyboard navigation would escape during file
highlighting, since the fileHighlight sets the focus for fileName bar
for mouse operations.

This makes sure the user has to press Tab to explicitly escape the
keyboard navigation mode. For clicking the items, it should not affect
at all.

CCBUG: 466206
FIXED-IN: 6.14
(cherry picked from commit 8e4e84f045b7459c0b02b1b1b51a9df73cea068a)

Gbp-Pq: Name upstream_719e0b00_KFileWidget-Fix-key-navigation-escaping-in-save-dialogs.patch