fix: avoid snapshot-read close metadata NPE

[Gezi-lzq]

Why

Snapshot-read ElasticLog instances do not own a MetaStream or ElasticLogSegmentManager, but the normal close path attempted to use those components during partition removal or replacement. This caused SNAPSHOT_SUBSCRIBE_ERROR through a NullPointerException.

Backport: #3654 from 1.8 to main.

What

• Use a dedicated close path for snapshot-read logs.
• Close local segments and snapshot data streams without running normal metadata handoff, metadata persistence, or active-segment flush.
• Keep the normal ElasticLog close path unchanged.
• Avoid installing the normal lazy metadata listener for snapshot-read logs.

Test

The regression test applies real snapshot segment metadata, closes the snapshot-read log, and verifies that its data streams are closed.

Verification

./gradlew core:S3UnitTest --tests kafka.log.streamaspect.ElasticLogTest.testSnapshotReadCloseSkipsMetadataLifecycle passed.