Event loop? Suddenly can't start any programs on riscv64

While testing #26493, Shell stopped responding to any input so I closed the terminal window. Probably not related, but it's the last thing I did before I ran into this new issue. I can't start Terminal, I can't start any program that runs in terminal. I can't start File manager, TextEditor, or SystemMonitor. "Run..." doesn't even open a dialog. "Exit" opens the dialog, but I can't power off, reboot, or log out. When I click on any of these, I see a bit of CPU activity and then nothing. No errors are seen on the console, but it looks like the event loop has ceased working. ``` 837.547 [#0 dash(5985:5985)]: Terminating dash(5985) due to signal 2 4843.759 [#0 dash(5986:5986)]: Terminating dash(5986) due to signal 2 4846.881 [#0 dash(5987:5987)]: Terminating dash(5987) due to signal 2 4849.024 [#0 Shell(5988:5988)]: Terminating Shell(5988) due to signal 2 4857.788 [#0 dash(5989:5989)]: Terminating dash(5989) due to signal 2 4886.436 Terminal(105): MessageBox(0x0000001f0377c6b0): Quit event loop with result 0 4886.457 Terminal(105): MessageBox(0x0000001f0377c6b0): Event loop returned with result 0 4886.698 Terminal(105): Exiting terminal, updating utmp 4946.652 [#0 ImageDecoder(2529:2529)]: ImageDecoder(2529:2535) Should already die 4976.432 Taskbar(36): Activated app with ID 5 4996.769 Taskbar(36): Activated app with ID 54 5045.258 Taskbar(36): Activated app with ID 3 5059.966 Taskbar(36): Activated app with ID 54 5182.949 Taskbar(36): ShutdownDialog(0x0000000071949710): Quit event loop with result 0 5182.966 Taskbar(36): ShutdownDialog(0x0000000071949710): Event loop returned with result 0 5233.117 Taskbar(36): ShutdownDialog(0x0000000071949710): Quit event loop with result 0 5233.125 Taskbar(36): ShutdownDialog(0x0000000071949710): Event loop returned with result 0 5260.276 Taskbar(36): Activated app with ID 53 5341.329 Taskbar(36): ShutdownDialog(0x0000000071949710): Quit event loop with result 0 5341.329 Taskbar(36): ShutdownDialog(0x0000000071949710): Event loop returned with result 0 5355.650 Taskbar(36): ShutdownDialog(0x0000000071949710): Quit event loop with result 0 5355.664 Taskbar(36): ShutdownDialog(0x0000000071949710): Event loop returned with result 0 5724.612 Taskbar(36): ShutdownDialog(0x0000000071949710): Quit event loop with result 0 5724.612 Taskbar(36): ShutdownDialog(0x0000000071949710): Event loop returned with result 0 ```