fix: reject out-of-range integral cell values

[nkuprins]

Closed: #1100

Purpose of the pull request

As title.

What's changed?

• Integer converters and NumberUtils.parseByte/parseShort/parseInteger/parseLong now range-check the value before narrowing, so out-of-range values throw instead of wrapping around.
• The integer parse* methods now call parseBigDecimal, which already has the hasFormat branch.
• Added out-of-range tests to ConverterTest and NumberUtilsTest.

Checklist

• I have read the Contributor Guide.
• I have written the necessary doc or comment.
• I have added the necessary unit tests and all cases have passed.