[SPARK-53380] Add SPARK_LOCAL_IP env variable to MacOS-based integration test jobs

[dongjoon-hyun]

What changes were proposed in this pull request?

This PR aims to recover MacOS-based integration tests by adding SPARK_LOCAL_IP environment variables like Apache Spark main repository.

Why are the changes needed?

To recover MacOS-based CI failures. Currently, all MacOS-based integration test GitHub Action jobs are broken.

The root cause is that SparkContext fails due to Invalid Spark URL error like the following because getHost is null in Java.

$ jshell
jshell> new java.net.URI("spark://HeartbeatReceiver@sat12-bq147_186fa0a6-15fa-47f9-ad18-71676ed8dcea-4A992716D7F1.local:49174").getHost()
$1 ==> null

25/08/26 06:20:49 INFO SparkConnectServer: Starting Spark session.
25/08/26 06:20:50 INFO SparkContext: Running Spark version 4.1.0-preview1
25/08/26 06:20:50 INFO SparkContext: OS info Mac OS X, 15.5, aarch64
25/08/26 06:20:50 INFO SparkContext: Java version 21.0.8
...
25/08/26 06:20:50 INFO JettyUtils: Start Jetty 0.0.0.0:4040 for SparkUI
25/08/26 06:20:50 INFO Utils: Successfully started service 'SparkUI' on port 4040.
...
25/08/26 06:20:50 INFO Executor: Starting executor ID driver on host sat12-bq147_186fa0a6-15fa-47f9-ad18-71676ed8dcea-4A992716D7F1.local
...
25/08/26 06:20:50 ERROR SparkContext: Error initializing SparkContext.
org.apache.spark.SparkException: Invalid Spark URL: spark://HeartbeatReceiver@sat12-bq147_186fa0a6-15fa-47f9-ad18-71676ed8dcea-4A992716D7F1.local:49174
...
25/08/26 06:20:50 INFO SparkContext: SparkContext is stopping with exitCode 0 from main at NativeMethodAccessorImpl.java:0.

• https://github.com/apache/spark-connect-swift/actions/runs/17229744776/job/48881088121

Does this PR introduce any user-facing change?

No.

How was this patch tested?

Pass the CIs.

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

No.

[dongjoon-hyun]

Could you review this PR, @viirya ? It seems that I found the root cause and fix.

[dongjoon-hyun]

Let me merge this to recover the CI~

[viirya]

Looks good.

[dongjoon-hyun]

Thank you, @viirya .

[peter-toth]

Late LGTM.

[dongjoon-hyun]

Thank you, @peter-toth .