improve order fields performance on heavy forms

[Liviu-p]

Improve field order script performance on heavy forms - client side

Related issue: https://github.com/Strategy11/formidable-pro/issues/2273

The heavy demo form can be found attached in this comment: https://github.com/Strategy11/formidable-pro/issues/2273#issuecomment-1775660144

Before

ux.-.before.mp4

After

ux.-.after.mp4

Q&A

link: https://qa.formidableforms.com/testlp/wp-admin/admin.php?page=formidable&frm_action=edit&id=14
FF LITE plugin version: Version 6.x - Fields order optimisation

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (3b23ce0) 29.89% compared to head (8faf4c8) 29.97%.
Report is 26 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #1467      +/-   ##
============================================
+ Coverage     29.89%   29.97%   +0.08%     
- Complexity     7530     7544      +14     
============================================
  Files           113      113              
  Lines         24858    24900      +42     
============================================
+ Hits           7432     7465      +33     
- Misses        17426    17435       +9     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[garretlaxton]

This is still pretty slow for me, it seems to lag sometimes after making a change.