[Security Solution] Highlighted fields with long values are hard to read

[MadameSheema]

Describe the bug:

• Highlighted fields with long values are hard to read

It would be great if we can adjust the size of the table in order to avoid having just 1 letter in a different row.

[elasticmachine]

Pinging @elastic/security-solution (Team: SecuritySolution)

[elasticmachine]

Pinging @elastic/security-threat-hunting (Team:Threat Hunting)

[PhilippeOberti]

@MadameSheema this is fixed in this PR, which will be available in BC3.

The decision was made to let the EuiTable manage the column on its own. Most of the time it will be 50-50 width for both column, but if a specific column has much longer text than the other, EuiTable will manage that internally.

Note: I applied the same logic to the PrevalenceDetails table (left panel). The last 4 columns (alert count, doc count, host prevalence and user prevalence) are fixed to a small percentage (because they're only numbers) and the first 2 columns (field and value) split the rest of the space (similarly to the highlighted fields table)

[MadameSheema]

Fixed on BC3.

[MadameSheema]

Re-opening since we still have some issues on BC3 in certain scenarios where the values are long. Pending to be validated on BC4 since this PR will fix/improve the situation.

[MadameSheema]

@PhilippeOberti please add the fixed label again once the PR is backported to 8.10, thanks!! 😊

[PhilippeOberti]

this PR fixes the issue, the backport is successful and the changes will be available in BC4

In the new implementation, the field and value colums both use 50% of the width

[MadameSheema]

Fixed on BC4!! :)