Quote jsonfield name when selecting in order to account for possible numeric parts in the name

[ricardogsilva]

This PR makes a small change to the way JSONFieldfields are selected during their respective field initializer function. The change is merely quoting the elemetn's name when finding it with JQuery.

As mentioned in #737, this changes makes it possible to use JSONField together with ListField.

---

• fixes Bug: Cannot have multiple JSONField in a ListField #737

[jowilf]

Thanks for the fix

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 99.72%. Comparing base (2540c51) to head (a7bc08a).
⚠️ Report is 60 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff             @@
##              main     #741      +/-   ##
===========================================
- Coverage   100.00%   99.72%   -0.28%     
===========================================
  Files           75       86      +11     
  Lines         5817     6850    +1033     
===========================================
+ Hits          5817     6831    +1014     
- Misses           0       19      +19     

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

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.