datadog-ci synthetic tests broken after recent merges

[ihorkokotskyi]

Bug description

latest changes broke datadog-ci synthetic tests

npx @datadog/datadog-ci synthetics run-tests -p
--apiKey ***
--appKey ***

npm warn exec The following package was not found and will be installed: @datadog/datadog-ci@4.0.0
Could not find @datadog/datadog-ci-plugin-synthetics. Installing...

┏━ [Installed plugin 🔌]
┃ Successfully installed @datadog/datadog-ci-plugin-synthetics@4.0.0
┗━

┏━ [Plugin not installed 🔌]
┃ The datadog-ci synthetics run-tests command could not be found.
┃ To use this command, please install @datadog/datadog-ci-plugin-synthetics alongside datadog-ci.
┗━

You can install the plugin using:
datadog-ci plugin install synthetics
or
datadog-ci plugin install @datadog/datadog-ci-plugin-synthetics

To troubleshoot, run:
datadog-ci plugin check synthetics
or
datadog-ci plugin check synthetics run-tests

Error: Process completed with exit code 1.

Describe what you expected

synthetic test run

Steps to reproduce the issue

npx @datadog/datadog-ci synthetics run-tests -p

Additional context

Operating System
Ubuntu
24.04.3
LTS

Node 22.14.0

Command

synthetics

[Drarig29]

Closed as duplicate of #1912