JGC-492 - Add e2e test for release bundle --format flag

[ehl-jf]

Summary

Adds end-to-end coverage for the new --format flag on the lifecycle Release Bundle V2 commands, introduced in jfrog-cli-artifactory#488.

TestReleaseBundleFormatFlag (in lifecycle_test.go) verifies:

• release-bundle-create --format=json emits a JSON confirmation object (release_bundle_name, release_bundle_version, status: "created").
• release-bundle-promote --format=table renders a summary table containing the expected headers (BUNDLE NAME, ENVIRONMENT) and the bundle name.

The release-bundle-promote --format=json (default) path is already covered by the existing promoteRb helper.

⚠️ Temporary dependency replace

This branch carries a temporary replace directive in go.mod pointing github.com/jfrog/jfrog-cli-artifactory at the JGC-492 feature branch commit, so the e2e test can exercise the not-yet-released --format flag:

replace github.com/jfrog/jfrog-cli-artifactory => github.com/ehl-jf/jfrog-cli-artifactory v0.0.0-20260615113839-04c78a8cf4fb

This must be removed once jfrog-cli-artifactory#488 is merged and the dependency is bumped to a released version. Not for merge until then.

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• All tests have passed. If this feature is not already covered by the tests, new tests have been added.
• The pull request is targeting the master branch.
• The code has been validated to compile successfully by running go vet ./....
• The code has been formatted properly using go fmt ./....

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