[ML] Minimally privileged ML user has access to "Import data"

[jportner]

Kibana version: 7.14.0 and earlier

Describe the bug:

A user with only "Read" access to the ML feature can see unusable UI elements. The Data Visualizer tab offers to allow the user to "Select file" to start to import data. The user can upload a file, configure some things, and get all the way to the end of the workflow to find out that the "Import" button is grayed out with a tooltip saying they don't have required privileges.

Steps to reproduce:

1. Create a minimal role, grant it only Read access to the ML feature
2. Create a user and assign it the new role
3. Log in as the new user
4. Navigate to the ML app and the Data Visualizer tab
5. Click "Select file" and upload a file
6. Scroll down

Expected behavior:

The user should not see the "Import data" panel at all, or the "Select file" button should be grayed out with an appropriate tooltip.

Screenshots (if relevant):

Screenshot 1:

Screenshot 2:

Screenshot 3:

Additional context

Potentially related to #106569

[elasticmachine]

Pinging @elastic/ml-ui (:ml)

[jgowdyelastic]

It is still useful to be able to visualize the contents of a file even if the ability to upload is inavailable.
We can make text changes here depending user permissions, so users do not go into the feature believing they can import data.

[peteharverson]

Closing issue as the title on the card in screenshot 1 in #106617 (comment) no longer uses the term 'Import':

and #135905 removes the phrase import the data into an Elasticsearch index from the about screen in the file data visualizer for users without the necessary privileges for importing data.