Investigate alternatives to Qt. #1077
Description
Context: #570
The linked bug is existential to this entire project. And it is a regression from Qt 6.8.3 -> Qt 6.9.
Qt's inability to fix this issue or roll back the change means that once support is dropped for Qt 6.8.3, we are in trouble. While we can prolong the life of the project by doing (unofficial) side-loaded installs of Qt 6.8.3, the writing is on the wall. Qt's suitability for our project is on its last leg unless Qt magically decides to fix this bug.
How other projects do not encounter this issue is beyond me. And because we are not a paying customer, Qt is unlikely to fix this for us. (also because it is difficult to produce an SSCCE to submit to them)
That said, moving off of Qt will be a monumental task. While the project has been making incremental steps to isolate and reduce its Qt usage for this very task, we are still highly dependent on Qt.
The bigger problem is that there is no obvious alternative to Qt.