Fix Always Encrypted GUID test in multi-server pipelines

[Muskan Gupta (muskan124947)]

Description

Fix the Always Encrypted GUID bulk-copy test introduced in #3041. The test creates its table through the AE connection, but its ciphertext check opened the base connection, which can target a different server in multi-server configurations and fail with "Invalid object name".

Reuse the connection that created the table and set SQLServerStatementColumnEncryptionSetting.DISABLED only on the ciphertext verification statement. This preserves the AE endpoint and authentication without changing connection-level encryption or enclave settings. The helper closes only its statement and result set; the caller retains ownership of the connection.

Test-only change; no driver behavior or public API changes.

Issues

Related to #3041.

Testing

• Existing failing integration coverage: BulkCopyGuidAETest.testBulkCopyGuidIntoEncryptedColumn; retains both decrypted GUID round-trip and ciphertext-length assertions.
• BulkCopyGuidParserTest and BulkCopyGuidMetadataTest: 44 tests passed under each of the jre11 and jre8 Maven profiles on JDK 21.
• Changed Java formatted with the repository Eclipse profile; git diff --check passed.
• Local AE integration execution is blocked in shared setup because JavaKeyStore.txt is missing. The multi-server AE pipeline must confirm the fix; no local AE pass is claimed.

[Copilot]

🟢 Approval recommended

The focused test-only change correctly uses the statement-level encryption override without altering connection ownership or driver behavior.

0 open findings

What changed in this PR

Fixes the Always Encrypted GUID integration test to verify ciphertext on the same server connection that created the table.

Changes:

• Reuses the AE connection for ciphertext verification.
• Disables column decryption only on the verification statement.

File	Description
BulkCopyGuidAETest.java	Prevents cross-server table lookup failures while preserving ciphertext validation.

🧠 Review effort: Balanced

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[Muskan Gupta (muskan124947)]

/azp run

[azure-pipelines]

Azure Pipelines:
Successfully started running 3 pipeline(s).

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 61.77%. Comparing base (5d5e4df) to head (d9e8e64).

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #3069      +/-   ##
============================================
+ Coverage     61.51%   61.77%   +0.26%     
- Complexity     5309     5393      +84     
============================================
  Files           154      154              
  Lines         36869    36869              
  Branches       6789     6789              
============================================
+ Hits          22680    22777      +97     
+ Misses        10308    10300       -8     
+ Partials       3881     3792      -89     

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