Clangd session mode forces Qt Creator to Edit mode

Steps:

1. Open Edit -> Preferences... -> C++ -> Clangd
2. See the list "Sessions with a single clangd instance" and add the "default" session to the list.
3. Restart Qt Creator

Result: now each time Qt Creator goes to Edit mode when opened (not Welcome mode) and the following error is printer to General Messages:

Bit annoying that I have to click back to Welcome mode every time I open Qt Creator to get to the sessions list in Welcome mode.

BTW! Not really related to the bug but for my workflow I would actually prefer a single checkbox to always force single clangd instance for a session instead of manually listing all sessions. I often use related projects in one session that do not have a single top-level project file but basically never use completely different build environments in a single session.