Update Java automations for contract changes in framework

The new core component, `spec-gen-sdk`, introduces contract changes between the SDK automation framework and language-specific automations. Each language team will need to update their automations to align with these changes

Start by reading the contract changes introduced by the `spec-gen-sdk` core component, then locate the Java language-specific automations in this repository. Done means the Java automations align with the updated SDK automation framework contracts; the issue does not name specific files or tests to run.

Written by the indexing model from the issue text.