[#31438] Trigger Precusor work for Prism. (#33763)

* [prism] Never mix Data and timers in the same bundle. No execution order guarantees.

* Trigger State  machine - no processing time - no merging.

* comments

* fix aftereach Handling to proceed only on finished

* Add default + fix OrFinally

* Split the isReady into onElement, shouldFire, and onFire methods.

* Add string prints, adjust OnWindowExp behavior.

* Add tests for unset AfterEndOfWindow subtriggers & fixes.

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Co-authored-by: lostluck <13907733+lostluck@users.noreply.github.com>