[Bug] unexpected behavior from Canvas expression switch function

[drewdaemon]

Kibana version:
As far back as 7.17.1

Describe the bug:
The Canvas switch expression function evaluates all cases before selecting its final result. This seems like unexpected behavior and prevents a previous case from being used as a guard for a following case.

Steps to reproduce:

1. Add kibana_sample_data_flights
2. Go to new Canvas workpad
3. Add shape -> edit expression
4. Paste in the following

essql query="SELECT * FROM kibana_sample_data_flights LIMIT 0"
| shape "hexagon" fill={
  switch 
    {case if={rowCount | lt 1} then="grey"} 
    {case if={getCell "Carrier" | eq "Kibana Airlines"} then="green"} 
    default="red"
  }
| render containerStyle={containerStyle}

5. click "Run"

Result: The second case (which invokes getCell) is evaluated even though the first case (which checks for an empty datatable) evaluates to true. This results in a runtime error from getCell being run on an empty table.

The user can still guard their second case with an extra if function in a subexpression.

Expected behavior:
The switch function checks the cases serially. As soon as a case evaluates to true, the switch function resolves with that result.

[elasticmachine]

Pinging @elastic/kibana-app-services (Team:AppServicesSv)

[dokmic]

Caused by #100409.