HDDS-12081. TestKeyInputStream repeats tests with default container layout

[adoroszlai]

What changes were proposed in this pull request?

Problem:
TestChunkInputStream and TestKeyInputStream repeat tests with default container layout, instead of testing with both FILE_PER_BLOCK and FILE_PER_CHUNK.

Causes:

• The tests set wrong string representation of the configured container layout (since HDDS-4552). Test cluster always falls back to the default layout, FILE_PER_BLOCK.
• KeyValueHandler does not allow creating containers with FILE_PER_CHUNK layout, even if configured correctly (since HDDS-11753).

Fix:

• Change the tests to start the cluster only once, with the default layout.
• Set the layout in datanode configs right before creating data.
• Close existing containers afterwards, to ensure each test writes data to new container, created with the layout being tested.

https://issues.apache.org/jira/browse/HDDS-12081

How was this patch tested?

Added temporary log in KeyValueHandler.handleCreateContainer to show the layout being used.

ozone/hadoop-hdds/container-service/src/main/java/org/apache/hadoop/ozone/container/keyvalue/KeyValueHandler.java

Lines 395 to 399 in 0723902

	ContainerLayoutVersion layoutVersion =
	ContainerLayoutVersion.getConfiguredVersion(conf);
	KeyValueContainerData newContainerData = new KeyValueContainerData(
	containerID, layoutVersion, maxContainerSize, request.getPipelineID(),
	getDatanodeId());

CI:
https://github.com/adoroszlai/ozone/actions/runs/12783565176