fix(manager): do not allow send submit when invalid

[rvsia]

part of #860

[codecov]

Codecov Report

Merging #861 into state-manager will decrease coverage by 0.01%.
The diff coverage is 83.33%.

@@                Coverage Diff                @@
##           state-manager     #861      +/-   ##
=================================================
- Coverage          93.35%   93.34%   -0.02%     
=================================================
  Files                226      226              
  Lines               3928     3934       +6     
  Branches            1217     1219       +2     
=================================================
+ Hits                3667     3672       +5     
- Misses               261      262       +1     

Impacted Files	Coverage Δ
...ckages/form-state-manager/src/utils/manager-api.ts	96.19% <83.33%> (-0.19%)	⬇️

---

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 d12cac6...e8a8fe7. Read the comment docs.

[Hyperkid123]

🎉 This PR is included in version 3.1.0 🎉

The release is available on

• react-form-renderer (@latest dist-tag)

Demo can be found here!