API event targeting surveys should call getActiveMatchingSurveys callback when conditions are met

[BrunnerLivio]

Description

I have created an API survey with the Display Conditions: User sends events -> my_event.

Given the following example

posthog.getActiveMatchingSurveys(console.log)
setTimeout(() => posthog.capture('my_event'), 1000)

Expected behavior

I'd expect the following console output:

[]
[{ "type": "api", "id": "...",... }]

Current behavior

The actual console output:

[]

Given the code snippet above, if posthog.getActiveMatchingSurveys(console.log) is executed again, the
callback receives the expected argument

[{ "type": "api", "id": "...",... }]

Though I am looking for a push-based mechanism from getActiveMatchingSurveys rather than a pull-based, as shown in the "Expected Behavior"