test: Verify Java 8 API compatibility coverage

[adinauer]

📜 Description

Intentionally introduce Java 8-incompatible JDK API references across several JVM integration modules.

This PR is a validation PR for #5745 and is expected to fail the Animal Sniffer checks wired into check.

Intentional violations:

• :sentry-logback: Objects.requireNonNullElse(Object, Object)
• :sentry-jul: Objects.requireNonNullElse(Object, Object)
• :sentry-apache-http-client-5: Objects.requireNonNullElse(Object, Object)
• :sentry-okhttp: Objects.requireNonNullElse(Object, Object)

This covers both modules that already had Animal Sniffer and modules that #5745 newly configures. The core :sentry violation was intentionally removed so the normal check lifecycle reaches non-core module failures in CI.

💡 Motivation and Context

This verifies the Java 8 runtime API compatibility coverage added in #5745 catches newer JDK API references across multiple JVM SDK integration modules while leaving Android builds unaffected.

💚 How did you test it?

Normal check fails in a non-core module once the core violation is removed:

./gradlew check --no-configuration-cache -Dorg.gradle.configureondemand=false

BUILD FAILED

[Undefined reference] io.sentry.transport.apache.(ApacheHttpClientTransportFactory.java:31)
  >> Object java.util.Objects.requireNonNullElse(Object, Object)

Focused --continue run confirms all intentional non-core violations are caught:

./gradlew :sentry-logback:animalsnifferMain \
  :sentry-jul:animalsnifferMain \
  :sentry-apache-http-client-5:animalsnifferMain \
  :sentry-okhttp:animalsnifferMain \
  --continue --no-configuration-cache -Dorg.gradle.configureondemand=false

BUILD FAILED

[Undefined reference] io.sentry.jul.(SentryHandler.java:261)
  >> Object java.util.Objects.requireNonNullElse(Object, Object)
[Undefined reference] io.sentry.logback.(SentryAppender.java:233)
  >> Object java.util.Objects.requireNonNullElse(Object, Object)
[Undefined reference] io.sentry.transport.apache.(ApacheHttpClientTransportFactory.java:31)
  >> Object java.util.Objects.requireNonNullElse(Object, Object)
[Undefined reference | java18-1.0] io.sentry.okhttp.(SentryOkHttpUtils.kt:79)
  >> Object java.util.Objects.requireNonNullElse(Object, Object)

Android still assembles:

./gradlew :sentry-android-core:assembleDebug :sentry-android-timber:assembleDebug \
  --no-configuration-cache -Dorg.gradle.configureondemand=false

BUILD SUCCESSFUL

Formatting/API generation still passes:

./gradlew spotlessApply apiDump
BUILD SUCCESSFUL

📝 Checklist

• I added GH Issue ID & Linear ID
• I added tests to verify the changes.
• No new PII added or SDK only sends newly added PII if sendDefaultPII is enabled.
• I updated the docs if needed.
• I updated the wizard if needed.
• Review from the native team if needed.
• No breaking change or entry added to the changelog.
• No breaking change for hybrid SDKs or communicated to hybrid SDKs.
• Public API changes reviewed by another Mobile SDK team member or implemented according to the develop docs spec.

🔮 Next steps

Close this PR after confirming the workflow fails as expected.

#skip-changelog

[sentry]

📲 Install Builds

Android

🔗 App Name	App ID	Version	Configuration
SDK Size	io.sentry.tests.size	8.48.0 (1)	release

⚙️ sentry-android Build Distribution Settings

[github-actions]

Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	311.77 ms	370.84 ms	59.07 ms
Size	0 B	0 B	0 B

Baseline results on branch: ci/java8-api-compatibility

Startup times

Revision	Plain	With Sentry	Diff
29117d4	315.09 ms	353.43 ms	38.34 ms
e122d12	360.71 ms	433.96 ms	73.25 ms
609df4f	315.04 ms	360.96 ms	45.92 ms

App size

Revision	Plain	With Sentry	Diff
29117d4	0 B	0 B	0 B
e122d12	0 B	0 B	0 B
609df4f	0 B	0 B	0 B