Add regression test for annotation array value type

[Yong-yuan-X]

Adds a failing regression test for Java annotation array arguments.

The test covers a Java source annotation usage where a Java annotation array argument is read through KSValueArgument.value. It verifies that the value should be exposed as Array<*>, matching the KSP API contract.

The test is currently registered with runFailingTest in both AA and PSI configured suites to document the existing incorrect behavior before implementing the fix.

Refs #3008

Verified locally:

./gradlew :kotlin-analysis-api:test \
  --tests com.google.devtools.ksp.test.AAConfiguredUnitTestSuite.testAnnotationArrayValueType \
  --tests com.google.devtools.ksp.test.PsiConfiguredUnitTestSuite.testAnnotationArrayValueType

AAConfiguredUnitTestSuite > testAnnotationArrayValueType() PASSED
PsiConfiguredUnitTestSuite > testAnnotationArrayValueType() PASSED
BUILD SUCCESSFUL

[jaschdoc]

Thank you for the PR @Yong-yuan-X! It looks good. Just a few minor comments 👍

[Yong-yuan-X]

@jaschdoc Thanks for the review! I addressed both comments:

• Added Kotlin source coverage to annotationArrayValueType.kt.
• Moved AnnotationArrayValueTypeProcessor to kotlin-analysis-api/src/test/kotlin/com/google/devtools/ksp/processor/.

Verified locally:

./gradlew :kotlin-analysis-api:test \
  --tests com.google.devtools.ksp.test.AAConfiguredUnitTestSuite.testAnnotationArrayValueType \
  --tests com.google.devtools.ksp.test.PsiConfiguredUnitTestSuite.testAnnotationArrayValueType

Both targeted tests passed.

[jaschdoc]

Thank you for the quick update. Just one more thing and then it's good to go.

[Yong-yuan-X]

Thanks for the follow-up! I added the Kotlin annotation case as requested.

The test now uses both JavaAnnotation and KotlinAnnotation on both JavaAnnotated and KotlinAnnotated, and verifies each annotation array argument.

Verified locally:

./gradlew :kotlin-analysis-api:test \
  --tests com.google.devtools.ksp.test.AAConfiguredUnitTestSuite.testAnnotationArrayValueType \
  --tests com.google.devtools.ksp.test.PsiConfiguredUnitTestSuite.testAnnotationArrayValueType

Both targeted tests passed.

[jaschdoc]

Great, thank you for the PR!