feat(events): Implement default priority-based event processing (#14476)

* feat(events): Set internal events default priority to lowest, default events to 100 and order placed to 10

* Create swift-months-rush.md

* improvements

* improvements

* improvements

* fix condition

* doc

* fix tests

* fix tests

---------

Co-authored-by: Oli Juhl <59018053+olivermrbl@users.noreply.github.com>

integration-tests/http/__tests__/event-bus/subscriber-registration.spec.ts

@@ -5,6 +5,10 @@ import path from "path"
 
 jest.setTimeout(100000)
 
+function getJobCounts(queue) {
+  return queue.waiting + queue.delayed + (queue.prioritized || 0)
+}
+
 medusaIntegrationTestRunner({
   medusaConfigFile: path.join(
     __dirname,
@@ -42,8 +46,7 @@ medusaIntegrationTestRunner({
 
         const queue = (eventBus as any).queue_
         const jobCountsBefore = await queue.getJobCounts()
-        const totalJobsBefore =
-          jobCountsBefore.waiting + jobCountsBefore.delayed
+        const totalJobsBefore = getJobCounts(jobCountsBefore)
 
         await eventBus.emit(
           composeMessage(testEventName, {
@@ -55,9 +58,9 @@ medusaIntegrationTestRunner({
         )
 
         const jobCountsAfterWithSubscriber = await queue.getJobCounts()
-        const totalJobsAfterWithSubscriber =
-          jobCountsAfterWithSubscriber.waiting +
-          jobCountsAfterWithSubscriber.delayed
+        const totalJobsAfterWithSubscriber = getJobCounts(
+          jobCountsAfterWithSubscriber
+        )
 
         expect(totalJobsAfterWithSubscriber).toBeGreaterThan(totalJobsBefore)