Fix and restore hibernate-reactive-mssql tests

[yrodiere]

Fixes #46018

(thanks again @holly-cummins for spotting this...)

I had to make a few changes to the tests, which were quite thoroughly broken. Not even compiling.

Even though we went (quite) some time without running these tests, it looks like we got lucky: tests still pass, and (critically) native compilation works fine.

I'd recommend trying to backport to (at least) 3.15 to make sure things are alright there too...

[gsmet]

Thanks and good catch @holly-cummins !

[quarkus-bot]

Status for workflow Quarkus CI

This is the status report for running Quarkus CI on commit e1f94a9.

✅ The latest workflow run for the pull request has completed successfully.

It should be safe to merge provided you have a look at the other checks in the summary.

You can consult the Develocity build scans.

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Flaky tests - Develocity

⚙️ JVM Tests - JDK 17 Windows

📦 extensions/scheduler/deployment

✖ io.quarkus.scheduler.test.timezone.ScheduledMethodTimeZoneTest.testScheduledJobs - History

• expected: <true> but was: <false> - org.opentest4j.AssertionFailedError

org.opentest4j.AssertionFailedError: expected: <true> but was: <false>
	at org.junit.jupiter.api.AssertionFailureBuilder.build(AssertionFailureBuilder.java:151)
	at org.junit.jupiter.api.AssertionFailureBuilder.buildAndThrow(AssertionFailureBuilder.java:132)
	at org.junit.jupiter.api.AssertTrue.failNotTrue(AssertTrue.java:63)
	at org.junit.jupiter.api.AssertTrue.assertTrue(AssertTrue.java:36)
	at org.junit.jupiter.api.AssertTrue.assertTrue(AssertTrue.java:31)
	at org.junit.jupiter.api.Assertions.assertTrue(Assertions.java:183)
	at io.quarkus.scheduler.test.timezone.ScheduledMethodTimeZoneTest.testScheduledJobs(ScheduledMethodTimeZoneTest.java:70)