Unable to get correct chart repo chart for default chart installation.

[dheeth]

Checklist:

• [x] I've searched in the docs and FAQ for my answer
• [x] I've included steps to reproduce the bug.

Describe the bug

If we have multiple rollout charts/devtron agent available on Devtron, it randomly selects any one rollout chart to deploy

To Reproduce

1. Add devtron helm repo - https://helm.devtron.ai
2. Add devtron-charts S3 helm repo
3. Add a cluster and click install devtron-agent
4. Now rollout chart is available in both the repos that we added
5. It will randomly select any one of them and trigger rollout deployment

Expected behavior

It should install the latest/fixed version or chart from fixed repo

Current behavior

It randomly selects any one of them and installs, which is not good as the default rollout can't even be deleted if gets installed from wrong chart

AB#437