fix: error when input type is checkbox

[miguelaeh]

Description of changes

Extending the SignUp class to implement a custom sign up field like the following:

    this.signUpFields = [
       ....
      {
        label: 'Terms',
        key: 'custom:terms', // Key on the user pool
        required: true,
        displayOrder: 4,
        type: 'checkbox'
      },
     ....

Ends with the following error when clicking signup:

 error: Cannot convert TRUE_VALUE to string

That seems to be because the checkbox value is a true boolean that cannot be converted to a string. With this change instead of leaving JS to make that cast to a string, we force it so in the case of a true boolean "true" as a string will be set.

Issue #, if available

Description of how you validated changes

I validated the changes manually and the issue with the boolean values dissapeared.

Checklist

• PR description included
• yarn test passes
• Tests are changed or added
• Relevant documentation is changed or added (and PR referenced)

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[codecov]

Codecov Report

Merging #8048 (4a86134) into main (fb28a36) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main    #8048   +/-   ##
=======================================
  Coverage   75.42%   75.42%           
=======================================
  Files         215      215           
  Lines       13548    13548           
  Branches     2673     2673           
=======================================
  Hits        10218    10218           
  Misses       3127     3127           
  Partials      203      203           

Impacted Files	Coverage Δ
packages/aws-amplify-react/src/Auth/AuthPiece.tsx	86.95% <100.00%> (ø)
...ges/aws-amplify-react/src/Widget/SelectMFAType.tsx	86.88% <100.00%> (ø)
...ges/aws-amplify-react/src/Widget/TOTPSetupComp.tsx	92.53% <100.00%> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update fb28a36...4a86134. Read the comment docs.

[codecov-commenter]

Codecov Report

Merging #8048 (34b5c1f) into main (7cfe581) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main    #8048   +/-   ##
=======================================
  Coverage   78.02%   78.02%           
=======================================
  Files         250      250           
  Lines       18109    18109           
  Branches     3882     3882           
=======================================
  Hits        14129    14129           
  Misses       3850     3850           
  Partials      130      130           

Impacted Files	Coverage Δ
packages/aws-amplify-react/src/Auth/AuthPiece.tsx	86.45% <100.00%> (ø)
...ges/aws-amplify-react/src/Widget/SelectMFAType.tsx	88.40% <100.00%> (ø)
...ges/aws-amplify-react/src/Widget/TOTPSetupComp.tsx	92.10% <100.00%> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 7cfe581...34b5c1f. Read the comment docs.

[ashika01]

Thank you for your contribution. I am getting this merged in.

[github-actions]

This pull request has been automatically locked since there hasn't been any recent activity after it was closed. Please open a new issue for related bugs.

Looking for a help forum? We recommend joining the Amplify Community Discord server *-help channels or Discussions for those types of questions.