Fix setting values in date input and time picker when submitting as part of the form

[agubler]

Type: bug

The following has been addressed in the PR:

• [ ] There is a related issue
• [ ] All code matches the style guide
• [ ] Unit tests are included in the PR
• [ ] For new widgets, an entry has been added to the .dojorc
• [ ] For new widgets, theme.variant() is added to the root domnode
• [ ] Any widget variant uses theme.compose like this
• [ ] WidgetProperties are exported

Description:

When using the inputs as part of a form the setting of the values on "Enter" was actually done on the next render, which meant that the submit of the form happened with "stale" data before it was updated. This changes to set the value immediately so it is correct for a form submission

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widget-test-docs – ./

🔍 Inspect: https://vercel.com/dojo/widget-test-docs/pnkpksgbx
✅ Preview: https://widget-test-docs-git-fork-agubler-date-input-in-form.dojo1.now.sh

dojo.widgets – ./

🔍 Inspect: https://vercel.com/dojo/dojowidgets/ntl5o1zcb
✅ Preview: https://dojowidgets-git-fork-agubler-date-input-in-form.dojo1.now.sh

[codecov[bot]]

Codecov Report

Merging #1666 (b05fba6) into master (92b6e1f) will decrease coverage by 0.04%. The diff coverage is 71.42%.

@@            Coverage Diff             @@
##           master    #1666      +/-   ##
==========================================
- Coverage   89.90%   89.85%   -0.05%     
==========================================
  Files          94       94              
  Lines        4951     4950       -1     
  Branches     1339     1336       -3     
==========================================
- Hits         4451     4448       -3     
- Misses        247      248       +1     
- Partials      253      254       +1     

Impacted Files	Coverage Δ
src/date-input/index.tsx	90.65% <63.63%> (-1.94%)	:arrow_down:
src/time-picker/index.tsx	81.81% <80.00%> (ø)

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