Remove package upload verification stage

[rauldpm]

Describe the bug

The #385 added a verification stage to avoid the package upload to the S3 bucket if the package already exists, this broke the release package generation as the package is removed after 14 days, and usually, we have 1 week between stages, so if we have a Beta 1 package the Beta 2 package generation will fail, this condition should not be executed

To Reproduce
Steps to reproduce the behavior:

1. Build a wazuh-dashboard package and upload it using the GHA (v4.10.0-alpha3)
2. Build another package and upload it using the GHA (same parameter)
3. See the failed stage (verify package exists)

Expected behavior
The package should be uploaded unless the tests failed

OpenSearch Version
Default

Dashboards Version
Default

Plugins
Default

Screenshots

Not applicable

Host/Environment (please complete the following information):

• https://github.com/wazuh/wazuh-dashboard/actions/runs/11743935627
• https://github.com/wazuh/wazuh-dashboard/actions/runs/11743935487

Additional context

See the GHA links