Use Breeze mouse cursor theme by default

In startkde set the breeze mouse cursor theme to be the default for new plasma next users
REVIEW:117899

startkde/startkde.cmake

@@ -64,9 +64,9 @@ fi
 
 mkdir -p $configDir
 
-#This is basically setting defaults so we can use them with kstartupconfig4
+#This is basically setting defaults so we can use them with kstartupconfig5
 cat >$configDir/startupconfigkeys <<EOF
-kcminputrc Mouse cursorTheme 'Oxygen_White'
+kcminputrc Mouse cursorTheme 'breeze'
 kcminputrc Mouse cursorSize ''
 ksplashrc KSplash Theme Classic
 ksplashrc KSplash Engine KSplashQML