[SPARK-55193][CORE][BUILD] Use CompressionHandler as a replacement for the deprecated GzipHandler in JettyUtils

[LuciferYang]

What changes were proposed in this pull request?

This PR replaces GzipHandler with CompressionHandler in JettyUtils because GzipHandler has been deprecated and marked with forRemoval = true. The modification follows the deprecation guideline refer to

https://github.com/jetty/jetty.project/blob/e9d4cba5a9d8ed62100bb09480af6fbb39c636cb/jetty-core/jetty-server/src/main/java/org/eclipse/jetty/server/handler/gzip/GzipHandler.java#L42-L49

/**
 * @deprecated use the new {@code CompressionHandler} available in {@code org.eclipse.jetty.compression:jetty-compression-server}
 *             with your choice of compression implementation (gzip is {@code org.eclipse.jetty.compression:jetty-compression-gzip},
 *             brotli is {@code org.eclipse.jetty.compression:jetty-compression-brotli}, and zstandard is
 *             {@code org.eclipse.jetty.compression:jetty-compression-zstandard})
 */
@Deprecated(since = "12.1.1", forRemoval = true)
public class GzipHandler extends Handler.Wrapper implements GzipFactory

Why are the changes needed?

Cleanup deprecated API usage.

Does this PR introduce any user-facing change?

No

How was this patch tested?

• Pass Github Actions
• Manually built a Spark distribution and verified that the UI displays correctly.

Was this patch authored or co-authored using generative AI tooling?

No

[github-actions]

JIRA Issue Information

=== Improvement SPARK-55193 ===
Summary: Use CompressionHandler as a replacement for the deprecated GzipHandler in JettyUtils
Assignee: None
Status: Open
Affected: ["4.2.0"]

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[LuciferYang]

CompressionHandler loads org.eclipse.jetty.compression.gzip.GzipCompression via SPI