Allow Fuzzer use all class under test public methods

[sofurihafe]

Description

Fixes #2344

How to test

Automated tests

Not relevant.

Manual tests

1. Generate a unit test with 100% fuzzer setting for the mut method:

class SampleClass {
    private int someField = 0;

    public int getSomeField() {
        return someField;
    }

    public void randomMethod1() {
        this.someField = 42;
        int[] array = {0};
        this.someField = array[10];
    }

    public int mut() {
        if (this.someField == 42) return 0;
        else if (this.someField == 0) return 1;
        else return 2;
    }
}

Generated test will have randomMethod1() being called and wrapped in try-catch block.

public final class SampleClassTest {
    ///region Test suites for executable SampleClass.mut

    ///region FUZZER: SUCCESSFUL EXECUTIONS for method mut()

    <...>

    @Test
    public void testMutReturnsZero() {
        SampleClass sampleClass = new SampleClass();
        try {
            sampleClass.randomMethod1();
        } catch (ArrayIndexOutOfBoundsException arrayIndexOutOfBoundsException) {}

        int actual = sampleClass.mut();

        assertEquals(0, actual);
    }
    ///endregion

    ///endregion
}