ViewInternal: Fix 'Go to matching bracket' in override mode

Summary: BUG: 402594

Reviewers: #ktexteditor, dhaumann

Reviewed By: #ktexteditor, dhaumann

Subscribers: dhaumann, kwrite-devel, kde-frameworks-devel, #ktexteditor

Tags: #kate, #frameworks

Differential Revision: https://phabricator.kde.org/D17852