[BUG] Missing indices / datastreams in Configure logs scan

What is the bug?
I only have access to security-auditlog-* indices in Select Index/Aliases in Configure logs scan

How can one reproduce the bug?
Steps to reproduce the behavior:

1. Go to 'Security Analytics --> Threat Intelligence --> Configure scan'
2. Click on 'Select Indexes/Aliases'
3. Datastreams and indices starting with '.' are not displayed

What is the expected behavior?
A clear and concise description of what you expected to happen.

What is your host/environment?

• OS: Debian 12
• Version 2.16 and 2.17
• Plugins

Do you have any additional context?
It seems that there is an issue with Datastreams and Indices starting with . (so it's impossible to add indices created by datastreams)
It's recommended to use Aliases and Datastreams, but none of them are displayed in the dropdown list...
[Aliases](https://opensearch.org/docs/latest/im-plugin/index-alias) and [data streams](https://opensearch.org/docs/latest/im-plugin/data-streams/) are recommended for optimal threat intel scans.

Start by reproducing the issue in Security Analytics → Threat Intelligence → Configure scan, then inspect the Select Indexes/Aliases flow for how indices, aliases, and datastreams are listed. Done means indices and datastreams whose names start with a dot, including those created by datastreams, appear in the dropdown and can be selected.