clangd "path to executable" setting is remembered too well

I had previously installed QtC 6.0.0-beta1 and enabled use of clangd on a project. Later I installed 6.0.0-beta2. If I go to the Clangd preferences tab from 6.0.0-beta2, the "Path to executable" setting still shows "C:\Qt\qtcreator-6.0.0-beta1\bin\clang\bin\clangd.exe".

I'm not 100% certain that I never clicked the "Browse" button in 6.0.0-beta1, but if I did I didn't change the path from the default. So I would expect that beta2 would use a default value for that preference and therefore use the version of clangd.exe that ships with beta2.