replace leaflet css/js files in editor rich

[Tlazypanda]

Fixes #7923

Replaced leaflet css/js files in editor rich which are otherwise available from the asset pipeline.

• PR is descriptively titled 📑 and links the original issue above 🔗
• tests pass -- look for a green checkbox ✔️ a few minutes after opening your PR -- or run tests locally with rake test
• code is in uniquely-named feature branch and has no merge conflicts 📁
• screenshots/GIFs are attached 📎 in case of UI updation
• ask @publiclab/reviewers for help, in a comment below

Thanks!

[codecov]

Codecov Report

Merging #8087 into main will decrease coverage by 0.56%.
The diff coverage is 37.20%.

@@            Coverage Diff             @@
##             main    #8087      +/-   ##
==========================================
- Coverage   82.62%   82.05%   -0.57%     
==========================================
  Files          99      100       +1     
  Lines        5737     5773      +36     
==========================================
- Hits         4740     4737       -3     
- Misses        997     1036      +39     

Impacted Files	Coverage Δ
app/controllers/application_controller.rb	92.30% <ø> (ø)
app/controllers/users_controller.rb	82.29% <ø> (ø)
app/mailers/admin_mailer.rb	90.90% <12.50%> (-9.10%)	⬇️
app/models/user.rb	86.44% <12.50%> (-4.61%)	⬇️
app/jobs/digest_spam_job.rb	33.33% <33.33%> (ø)
app/controllers/admin_controller.rb	80.00% <100.00%> (-1.86%)	⬇️
app/controllers/spam2_controller.rb	100.00% <100.00%> (ø)
app/controllers/tag_controller.rb	81.40% <100.00%> (ø)
app/services/execute_search.rb	88.88% <0.00%> (-5.56%)	⬇️
app/api/srch/search.rb	66.24% <0.00%> (-3.83%)	⬇️
... and 2 more

[Tlazypanda]

@cesswairimu @jywarren can you kindly review? Thanks ✌️

[jywarren]

Hmm. @Tlazypanda would you mind trying to look in the Travis logs to see what happened here? Thank you!

[Tlazypanda]

Hey @jywarren the test failing is the Tag Selection test thing which i think is unrelated 😅

[jywarren]

Hmm. Let's log this at #7315 -- i'll try restarting one more time...

[jywarren]

Yay! OK but still tracking at #7315.

[jywarren]

Great!!! Thank you!!!