fix(cache): only autoload when plugins have been parsed. Needed to support `import`

lua/lazy/core/cache.lua

@@ -81,12 +81,15 @@ function M.check_autoload(modname, modpath)
     if plugin and modpath:find(plugin.dir, 1, true) == 1 then
       -- we're not interested in loader time, so calculate delta here
       M.stats.autoload.time = M.stats.autoload.time + uv.hrtime() - start
+      -- only autoload when plugins have been loaded
+      if #require("lazy.core.config").plugins > 0 then
         if not plugin._.loaded then
           if plugin.module == false then
             error("Plugin " .. plugin.name .. " is not loaded and is configured with module=false")
           end
           require("lazy.core.loader").load(plugin, { require = modname })
         end
+      end
       return true
     end
   end