fix(bqjdbc): fix Long to java.sql.Time coercion

[Neenu1995]

b/510853631

chore(bqjdbc): suppress deprecation warnings

• Silenced Deprecation Warnings: Added @deprecated and @SuppressWarnings("deprecation") annotations to all mandated overridden methods in BigQueryBaseResultSet, BigQueryPreparedStatement, and BigQueryCallableStatement to satisfy the standard JDBC interface contract warning-free.
• Unified Arrow Coercion (LongToTime): Refactored the Arrow microsecond parser to use new Time(value / 1000) to achieve a zero-overhead, warning-free conversion that fully preserves sub-second millisecond precision.
• Fixed JSON Coercion Wall-Clock Shifts (FieldValueToTime): Introduced local timezone offset compensation arithmetic (millisOfDay - TimeZone.getDefault().getOffset()) to ensure the retrieved timezone-agnostic time-of-day matches the stored database value exactly, regardless of the client machine's timezone.
• Fixed Timestamp Shifting (FieldValueToTimestamp & LongToTimestamp): Standardized both numeric timestamp parsers to use the timezone-agnostic Timestamp.from(instant) standard, preserving the exact UTC point in time and eliminating dual timezone shifts in non-UTC system timezones.
• Modernized the Test Suite: Restructured and updated the expected assertions across multiple unit test classes (ArrowFormatType, FieldValueType, BigQueryArrowArrayOfPrimitives, BigQueryArrowStruct) to enforce these timezone-robust, high-precision, and compliant results.

[gemini-code-assist]

Code Review

This pull request updates several JDBC methods in BigQueryBaseResultSet, BigQueryCallableStatement, and BigQueryPreparedStatement with @deprecated and @SuppressWarnings annotations to align with the JDBC specification. Additionally, it replaces a deprecated java.sql.Time constructor in BigQueryTypeCoercionUtility with a Calendar-based implementation. A review comment suggests using java.time.LocalTime and java.sql.Time.valueOf() instead of Calendar to avoid performance overhead during result set iteration, as Calendar is relatively expensive for high-frequency operations.

[Neenu1995]

/gemini review

[gemini-code-assist]

Code Review

This pull request deprecates several JDBC methods and refactors time and timestamp coercion logic within the BigQuery JDBC driver to improve precision and compliance with the JDBC specification. Key changes include simplifying Long-to-Time and Long-to-Timestamp conversions and introducing timezone offset adjustments for wall-clock representation in Time objects. Feedback identifies a logic inconsistency between Arrow and JSON transport paths, suggests using Instant.EPOCH.plus for better readability, warns of performance overhead from repeated TimeZone.getDefault() calls in hot paths, and notes that certain unit tests have become environment-dependent.

[logachev]

Can we use import instead of full class names? (I don't know why jetski defaults to using full names tbh, but I don't think it is a common practice)