[Observability RAC] Remove cell actions from all columns

[mgiota]

📝 Summary

The Copy to keyboard and Expand icons should be removed from all columns of the Observability Alerts table. Removing the cell actions will fix the issue of leading to a broken empty page when clicking on the Expand icon.

✔️ Acceptance criteria

• Copy to keyboard button should be removed from all columns
• Expand button should be removed from all columns

Relates to #108119

[elasticmachine]

Pinging @elastic/logs-metrics-ui (Team:logs-metrics-ui)

[mgiota]

After our RAC meeting there were discussing around keeping the copy button in order to be consistent with other solutions.

2nd button (expand/popover icon) comes from EuiDataGrid. @michaelolo24 I haven't looked into that yet, in case you already figured it out, keep me in the loop.

@katrin-freihofner

[mgiota]

@katrin-freihofner What shall we do with the copy icon?

Regarding broken expand icon looks like there is a fix from Security team #108616. I am checkin it now. Shall we keep the icon if it is fixed? This way we will be consistent with Security team

Here's how the expand icon looks like with the fix

[katrin-freihofner]

@mgiota looks good, let's keep it that way.