[CreateProject] Improve empty name handling

[imnasnainaec]

Resolves #3173

To review, experiment in the Create Project box (on the first page you see when you login). Add and remove content from different fields (including the file upload), observing (A) when the warning text appears/disappears on the "Project Name" field, and (B) when the Submit button is disabled/enabled. Does the behavior feel intuitive, sensible?

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This change is 

[codecov]

Codecov Report

Attention: Patch coverage is 50.00000% with 5 lines in your changes missing coverage. Please review.

Project coverage is 74.76%. Comparing base (85c12dd) to head (4c0de98).
Report is 45 commits behind head on master.

Files with missing lines	Patch %	Lines
src/components/ProjectScreen/CreateProject.tsx	50.00%	3 Missing and 2 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3184      +/-   ##
==========================================
- Coverage   74.76%   74.76%   -0.01%     
==========================================
  Files         277      277              
  Lines       10636    10635       -1     
  Branches     1276     1278       +2     
==========================================
- Hits         7952     7951       -1     
  Misses       2319     2319              
  Partials      365      365              

Flag	Coverage Δ
backend	83.84% <ø> (ø)
frontend	66.73% <50.00%> (-0.01%)	⬇️

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[jasonleenaylor]

Reviewed 2 of 2 files at r2, all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @imnasnainaec)