fix: unexpected behavior when autocomplete = false (#1920)

- https://github.com/hrsh7th/nvim-cmp/issues/1251
- https://github.com/hrsh7th/nvim-cmp/issues/1919

lua/cmp/init.lua

@@ -120,6 +120,7 @@ cmp.abort = cmp.sync(function()
   if cmp.core.view:visible() then
     local release = cmp.core:suspend()
     cmp.core.view:abort()
+    cmp.core:reset()
     vim.schedule(release)
     return true
   else