Add Negative Parser Tests

[adriancostin-sd]

The current parser validates some models that do not parse with the official omg parser.
Example which parses but should not parse according to official:

package reading {
  if selectedSensor != null {
    assign reading := selectedSensor.reading;
  } else if a == b {
    assign reading := undefinedValue;
  } else {
    assign reading := undefinedValue;
  }
}

• Integrate official parser as a test dependency #120
  • find a version that is compatible with Java 21
• Test all current test models against the official parser (see visualization project as inspiration official parser usage) #121
  • 1. only isolated parsing
  • 2. full validation (including official CoCos)
• Create bug Issues for the models that should not parse but do

Please for every bullet point create an issue and edit the issue here to link to that issue