FIx: Do not call SQLCancel in core_sqlsrv_next_result after SQLMoreResults error

[jahnvi480]

Github issue #1599

This pull request improves how the SQLSRV and PDO_SQLSRV drivers handle errors during multi-statement batches, specifically when a non-fatal error (such as divide-by-zero) occurs mid-batch with XACT_ABORT OFF. Previously, the driver would call SQLCancel() on any error, which destroyed the remaining result sets. Now, errors are reported but the batch remains navigable, allowing users to continue to subsequent result sets. The changes also ensure that error information is available without interrupting batch navigation, and add comprehensive tests for these scenarios.

Error handling and batch navigation improvements:

• Updated core_sqlsrv_next_result to distinguish between internal and user-facing error handling: for user-facing calls (like sqlsrv_next_result and PDO::nextRowset), SQL errors no longer trigger SQLCancel(), allowing continued navigation through remaining result sets after a mid-batch error. Errors are reported via standard error handlers, and any pending Zend exceptions are cleared to avoid aborting navigation.
• Modified function signatures and call sites (pdo_stmt.cpp, stmt.cpp) to support the new error handling logic by passing additional parameters to core_sqlsrv_next_result.

Test coverage:

• Added pdo_batch_error_continue.phpt to test that PDO::nextRowset() reports errors but allows continued navigation after a mid-batch error, for both ERRMODE_WARNING and ERRMODE_EXCEPTION modes.
• Added sqlsrv_batch_error_continue.phpt to verify that sqlsrv_next_result() behaves correctly after a mid-batch error, that error info is available, and that re-execution works after such errors.

Dependency and include updates:

• Included zend_exceptions.h in core_stmt.cpp to enable Zend exception management for the improved error handling logic.

[codecov]

Codecov Report

❌ Patch coverage is 90.90909% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 85.75%. Comparing base (9e82915) to head (1bbfdc9).
⚠️ Report is 1 commits behind head on dev.

Files with missing lines	Patch %	Lines
source/shared/core_stmt.cpp	88.88%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##              dev    #1600   +/-   ##
=======================================
  Coverage   85.74%   85.75%           
=======================================
  Files          23       23           
  Lines        7221     7230    +9     
=======================================
+ Hits         6192     6200    +8     
- Misses       1029     1030    +1     

Files with missing lines	Coverage Δ
source/pdo_sqlsrv/pdo_stmt.cpp	81.71% <100.00%> (ø)
source/sqlsrv/stmt.cpp	88.31% <100.00%> (ø)
source/shared/core_stmt.cpp	93.48% <88.88%> (-0.04%)	⬇️

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