fix(loader): reset cache before installing plugins during startup. Fixes #803

Author: folke

lua/lazy/core/loader.lua

@@ -69,6 +69,7 @@ function M.install_missing()
           break
         end
       end
+      Cache.reset()
       require("lazy.manage").install({ wait = true, lockfile = true, clear = false })
       -- remove any installed plugins from indexed, so cache will index again
       for _, p in pairs(Config.plugins) do