Quasar: "quasar clean" creates folder called "dist" when distDir is set to something else

[rfox12]

Very minor...
In my quasar.conf.js I have build.distDir set to a new value. I deleted the "dist" folder in my project root--I don't need it.
When I run quasar clean I see:

 app:artifacts Cleaned build artifact: "C:\Temp\server\app_bundle" +0ms
 app:artifacts Cleaned build artifact: "C:\Temp\.quasar" +5ms
 app:artifacts Emptied dist folder +4ms

 app:clean Done cleaning build artifacts +1ms

and I see that a new (empty) dist folder has been created in my project.

[rstoenescu]

Fix will go into "@quasar/app" v1.8.7.
Thanks for also supplying a PR.