Compare `DateTimeInterface` by default

[vjik]

Q	A
Is bugfix?	❌
New feature?	✔️
Breaks BC?	❌
Fixed issues

[codecov[bot]]

Codecov Report

Base: 95.88% // Head: 95.89% // Increases project coverage by +0.00% :tada:

Coverage data is based on head (ef39274) compared to base (ba6a5a5). Patch coverage: 100.00% of modified lines in pull request are covered.

:exclamation: Current head ef39274 differs from pull request most recent head bc6856b. Consider uploading reports for the commit bc6856b to get more accurate results

Additional details and impacted files

```diff @@ Coverage Diff @@ ## 520-floats-equality #551 +/- ## ====================================================== Coverage 95.88% 95.89% - Complexity 713 715 +2 ====================================================== Files 85 85 Lines 2162 2166 +4 ====================================================== + Hits 2073 2077 +4 Misses 89 89 ``` | [Impacted Files](https://codecov.io/gh/yiisoft/validator/pull/551?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=yiisoft) | Coverage Δ | | |---|---|---| | [src/Rule/CompareHandler.php](https://codecov.io/gh/yiisoft/validator/pull/551?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=yiisoft#diff-c3JjL1J1bGUvQ29tcGFyZUhhbmRsZXIucGhw) | `100.00% <100.00%> (ø)` | | Help us with your feedback. Take ten seconds to tell us [how you rate us](https://about.codecov.io/nps?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=yiisoft). Have a feature suggestion? [Share it here.](https://app.codecov.io/gh/feedback/?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=yiisoft)

:umbrella: View full report at Codecov.
:loudspeaker: Do you have feedback about the report comment? Let us know in this issue.