fix(typeahead): dont throw error if latinize is off and no value for …

[valorkin]

…input

fixes #4465

PR Checklist

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• read and followed the CONTRIBUTING.md guide.
• built and tested the changes locally.
• added/updated tests.
• added/updated API documentation.
• added/updated demos.

[codecov]

Codecov Report

Merging #4480 into development will decrease coverage by <.01%.
The diff coverage is 50%.

@@               Coverage Diff               @@
##           development    #4480      +/-   ##
===============================================
- Coverage        71.45%   71.44%   -0.01%     
===============================================
  Files              259      259              
  Lines             8377     8378       +1     
  Branches          1561     1562       +1     
===============================================
  Hits              5986     5986              
- Misses            1984     1985       +1     
  Partials           407      407

Impacted Files	Coverage Δ
src/typeahead/typeahead.directive.ts	74.86% <50%> (-0.4%)	⬇️
src/chronos/i18n/sk.ts	80.85% <0%> (-2.13%)	⬇️
src/chronos/i18n/cs.ts	84.74% <0%> (-1.7%)	⬇️
src/chronos/i18n/uk.ts	80.48% <0%> (+2.43%)	⬆️
src/chronos/i18n/pl.ts	77.77% <0%> (+2.77%)	⬆️

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