Fix 2212

[josenavas]

Fixes #2212

The text input now gets focused when opening the modal:

[codecov-io]

Codecov Report

Merging #2257 into dev will increase coverage by <.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##              dev    #2257      +/-   ##
==========================================
+ Coverage   92.82%   92.82%   +<.01%     
==========================================
  Files         171      171              
  Lines       18930    18930              
==========================================
+ Hits        17571    17572       +1     
+ Misses       1359     1358       -1

Impacted Files	Coverage Δ
qiita_db/test/test_analysis.py	98.01% <0%> (-0.34%)	⬇️
...t/handlers/api_proxy/tests/test_sample_template.py	98.66% <0%> (+0.88%)	⬆️

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[ElDeveloper]

Looks good! Although outside of the scope of this PR maybe also worth it to make enter submit the change?