Added class files should trigger a full reload

With instrumentation enabled, If there are updated classes AND new classes, instrumentation will occur, but the new "ADDED" classes won't be loaded.

In fact, consider the case:

changedClassResults.addedClasses.isEmpty() == false
&& changedClassResults.changedClasses.isEmpty() == false

in `RuntimeUpdatesProcessor` the following `if` condition will be `true`, causing the body to execute, setting `instrumentationChange = true`

```
if (changedClassResults.deletedClasses.isEmpty() && !changedClassResults.changedClasses.isEmpty()) {
```

however, the check a few lines later:

```
boolean restartNeeded = !instrumentationChange && (changedClassResults.isChanged()

will always be false, skipping over `changedClassResults.isChanged()` which expands to:

```
!changedClasses.isEmpty() || !deletedClasses.isEmpty() || !addedClasses.isEmpty();
```

so either (1) instrumentation should be skipped over when there are ADDED class files, or (2) the check below should read something along the lines of:

```
boolean restartNeeded = !changedClassResults.addedClasses.isEmpty() ||
!instrumentationChange &&
((IsolatedDevModeMain.deploymentProblem != null && userInitiated) || configFileRestartNeeded);
```

this patch is for (1).

(This should be backported to 1.11)

EDIT: This is draft as I am still verifying this works locally with both `main` and `1.11`
related: https://github.com/kiegroup/kogito-runtimes/pull/1123