Set alias for result of cast column function

[kesselb]

On OCI an expression like to_char(events) end up as $row['to_char(events)'] in the query result.

Main

Array
(
[class] => OCA\WorkflowScript\Operation
[entity] => OCA\WorkflowEngine\Entity\File
[TO_CHAR("EVENTS")] => ["\\OCP\\Files::postCreate","\\OCP\\Files::postWrite","\\OCP\\Files::postRename","\\OCP\\Files::postDelete","\\OCP\\Files::postTouch","\\OCP\\Files::postCopy","OCP\\SystemTag\\ISystemTagObjectMapper::assignTags"]
)

This PR

Array
(
[class] => OCA\WorkflowScript\Operation
[entity] => OCA\WorkflowEngine\Entity\File
[events] => ["\\OCP\\Files::postCreate","\\OCP\\Files::postWrite","\\OCP\\Files::postRename","\\OCP\\Files::postDelete","\\OCP\\Files::postTouch","\\OCP\\Files::postCopy","OCP\\SystemTag\\ISystemTagObjectMapper::assignTags"]
)

[nickvergessen]

backport needed!?

[kesselb]

/backport to stable22

[kesselb]

/backport to stable21

[kesselb]

/backport to stable20