Fix input method

Currently translated at 78.6% (554 of 704 strings)

Co-authored-by: Priit Jõerüüt <nhkwlate@joeruut.com>
Translate-URL: https://weblate.nheko.im/projects/nheko/nheko-master/fi/
Translation: Nheko/nheko

Currently translated at 100.0% (704 of 704 strings)

Co-authored-by: Priit Jõerüüt <nhkwlate@joeruut.com>
Translate-URL: https://weblate.nheko.im/projects/nheko/nheko-master/et/
Translation: Nheko/nheko

Reword tooltip for Open{Image,Video}External

New upload flow

Currently translated at 100.0% (704 of 704 strings)

Co-authored-by: Linerly <linerly@protonmail.com>
Translate-URL: https://weblate.nheko.im/projects/nheko/nheko-master/id/
Translation: Nheko/nheko

* Use advanceWidth to get the with of the original text

Co-authored-by: Nicolas Werner <nicolas.werner@hotmail.de>

Co-authored-by: Huy Ngo <duchuy29092000@gmail.com>

options to open images/videos with external program by default

properly commit preedit text