Fix decimal INF, NEG_INF, NAN values

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 81.25000% with 3 lines in your changes missing coverage. Please review.

Project coverage is 47.40%. Comparing base (7e303cb) to head (6735da1).

Files with missing lines	Patch %	Lines
.../main/java/tech/ydb/table/values/DecimalValue.java	81.25%	2 Missing and 1 partial :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #323 +/- ## ============================================ + Coverage 47.39% 47.40% +0.01% - Complexity 1732 1739 +7 ============================================ Files 305 305 Lines 12380 12381 +1 Branches 1237 1235 -2 ============================================ + Hits 5867 5869 +2 Misses 6051 6051 + Partials 462 461 -1 ```

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