Fix C++ client DATE 1000-01-01 query crash

[hongzhi-gao]

Description

Fix C++ client crash when querying DATE 1000-01-01: EMPTY_DATE_INT (10000101) was wrongly treated as NULL during decode, but it is also the valid encoding for 1000-01-01, causing C API parseDateExpressionToInt to throw.

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This PR has:

• been self-reviewed.
• added documentation for new or modified features or behaviors.
• added Javadocs for most classes and all non-trivial methods.
• added or updated version, license, or notice information
• added comments explaining the "why" and the intent of the code wherever would not be obvious for an unfamiliar reader.
• added unit tests or modified existing tests to cover new code paths, ensuring the threshold for code coverage.
• added integration tests.
• been tested in a test IoTDB cluster.

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Key changed/added classes (or packages if there are too many classes) in this PR

• iotdb-client/client-cpp/src/session/Date.cpp
• iotdb-client/client-cpp/src/include/Common.h
• iotdb-client/client-cpp/src/session/SessionC.cpp
• iotdb-client/client-cpp/test/cpp/sessionIT.cpp
• iotdb-client/client-cpp/test/cpp/sessionCIT.cpp

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Test plan

• session_tests.exe "[dateMinYear]" passed
• session_c_tests.exe "[c_dateMinYear]" passed
• Full session_tests and session_c_tests passed against local IoTDB