Fixes #6297: Fixes logic that checks if DateTimeFormatter parsed the string properly.
Suggested changes from @DASPRiD
Suggested changes from @DASPRiD
Programmatically generate the "true" tests for better coverage and to overcome issues with different ICU library versions.
Merge branch 'hotfix/6529'

Close #6529
Merge pull request #6311 from moderndeveloperllc/hotfix/6297-i18n-datetime-validator

Fixes #6297: Fixes logic that checks if IntlDateFormatter parsed the string properly.
[#6311] CS fixes

- Import all classes used
- concatenation should add indentation when overflowing to new lines
- single quotes instead of double quotes
Merge branch 'hotfix/6311' into develop

Forward port #6311