[LyX/master] Require at least Qt 5.12. Part2: Qt frontend

commit c39d5b760c71fb63e675eb01b405ae69b0259720 Author: Jean-Marc Lasgouttes Date: Wed Oct 23 12:00:20 2024 +0200 Require at least Qt 5.12. Part2: Qt frontend Most of it is fairly mechanical, but some parts require care. --- src/frontends/qt/CategorizedCombo.cpp | 4 --- src/fron

[LyX/master] Require at least Qt 5.12

commit 6ba2b5c5b9010dfe9b20b4e2d9abd6609e9b1301 Author: Jean-Marc Lasgouttes Date: Wed Oct 23 10:48:45 2024 +0200 Require at least Qt 5.12 Update the #if confitional accordingly everywhere excpt in frontends/qt. Update INSTALL and README. Cmake will need to be upd