[BUG] "Upload a file" button disabled in Stack Management > Index Patterns

[kavilla]

Describe the bug

When you cluster is empty and when you go to Index Patterns in Stack Management, the Upload a file button is disabled with the hover message being "This feature requires a Basic license." Once you add sample data or have any data in your cluster then this view isn't available.

To Reproduce
Steps to reproduce the behavior:

1. Have an empty cluster
2. Start OpenSearch Dashboards
3. Navigate to Index Patterns in Stack Management
4. See disabled button

Expected behavior
So what's happening is that it's checking https://github.com/opensearch-project/OpenSearch-Dashboards/blob/main/src/plugins/index_pattern_management/public/components/index_pattern_table/empty_state/empty_state.tsx#L91 to see if it should be disabled.

The Machine Learning plugin was removed as it is under x-pack and this button routes users to the file visualization under that plugin (e.g., http://localhost:5603/ahk/app/ml#/filedatavisualizer). So it's disable to prevent users from getting 404. However, there still ways to upload files for example going to Stack Management > Saved Objects > Import, but doesn't provide the GUI as before. So it's a little confusing because it implies an upsell when there is none and it really is just disabled because the file visualization doesn't exist anymore.

An immediate fix would be to delete this button but should there be a replacement?

OpenSearch Version
1.0

Dashboards Version
1.0

Plugins

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Screenshots

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Host/Environment (please complete the following information):

• OS: Mac OS
• Browser and version: Firefox

Additional context

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