(2024.12.01 and earlier) Private key for accessing the bastion host is invalid

**Bug description**
Downloading the bastion host’s SSH private key from the RES Web Portal on browsers other than Chrome result in a key that is not properly formatted. Users are unable to SSH to their host using the provided key.

**Affected versions (OSes, schedulers)**
2024.12.01 and earlier

**Mitigation**
Use Chrome browser for best experience when downloading SSH keys.

Alternatively, keys can be reformatted by creating a new line after `-----BEGIN PRIVATE KEY-----` and another new line just before `-----END PRIVATE KEY-----`.