Ensure TypeDB processes spawned by tests use the same java installation

[krishnangovindraj]

What is the goal of this PR?

We ensure the TypeDB process spawned by the runner utility uses the same java version as the test. This avoids issues due to the runner using a different java installation from the host machine.

What are the changes implemented in this PR?

• Sets the JAVA_HOME environment variable on the ProcessExecutor used by TypeDB (core & enterprise) runners.

[typedb-bot]

PR Review Checklist

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Trivial Change

• [x] This change is trivial and does not require a code or architecture review.

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