[JVM] Mark inner enum class 'abstract' when it is

[scaventz]

^KT-79231 fixed

For Kotlin, version 2.2.10-release-430 (JRE 23.0.1+11-39)

interface I {
    enum class E {
        V { override fun go() { } };
        abstract fun go()
    }
}

->
InnerClasses in I: public static final #18= #20 of #2; // E=class I$E of class I
InnerClasses in I$E: public static final #81= #2 of #80; // E=class I$E of class I
InnerClasses in I$E$V:public static final #33= #4 of #32; // E=class I$E of class I

interface I {
    enum class E {
        V { fun go() { } };
    }
} 

->
InnerClasses in I: public static final #18= #20 of #2; // E=class I$E of class I
InnerClasses in I$E: public static final #80= #2 of #79; // E=class I$E of class I
InnerClasses in I$E$V:public static final #33= #4 of #32; // E=class I$E of class I

---

for Java:
openjdk version "23.0.1" 2024-10-15
OpenJDK Runtime Environment (build 23.0.1+11-39)
OpenJDK 64-Bit Server VM (build 23.0.1+11-39, mixed mode, sharing)

public interface I {
    enum E {
        V { public void g() { } };
         abstract public void g();
    }
}

->
InnerClasses in I: public static abstract #13= #8 of #1; // E=class I$E of class I
InnerClasses in I$E: public static abstract #51= #1 of #47; // E=class I$E of class I
InnerClasses in I$E$1:public static abstract #21= #2 of #18; // E=class I$E of class I

public interface I {
    enum E {
        V { public void g() { } }
    }
}

->
InnerClasses in I: public static #13= #8 of #1; // E=class I$E of class I
InnerClasses in I$E: public static #50= #1 of #46; // E=class I$E of class I
InnerClasses in I$E$1:public static #21= #2 of #18; // E=class I$E of class I

---

So I suppose after KT-79231 is fixed, we get:

interface I {
    enum class E {
        V { override fun go() { } };
        abstract fun go()
    }
}

->
InnerClasses in I: public static abstract #19= #21 of #2; // E=class I$E of class I
InnerClasses in I$E: public static abstract #82= #2 of #81; // E=class I$E of class I
InnerClasses in I$E$V:public static abstract #34= #4 of #33; // E=class I$E of class I

interface I {
    enum class E {
        V { fun go() { } };
    }
}

->

InnerClasses in I: public static final #19= #21 of #2; // E=class I$E of class I
InnerClasses in I$E: public static final #81= #2 of #80; // E=class I$E of class I
InnerClasses in I$E$V:public static final #34= #4 of #33; // E=class I$E of class I

[scaventz]

I've run ./gradlew jvmCompilerTest, 5 tests failed (listed below), but somehow when I run them manually one by one, they all go green. I'm going to mark this pull request as "Ready for review".

JvmIrInterpreterAfterFirPsi2IrTestGenerated > Exceptions > testStackOverflow() FAILED
JvmIrInterpreterAfterFirPsi2IrTestGenerated > testSafeClassCast() FAILED
JvmIrInterpreterAfterFirPsi2IrTestGenerated > testObjectOverride() FAILED
JvmIrInterpreterAfterFirPsi2IrTestGenerated > Exceptions > testCommandsOutException() FAILED
JvmIrInterpreterAfterFirPsi2IrTestGenerated > testInterfaceDefault() FAILED

OpenJDK 64-Bit Server VM warning: CodeCache: size=262144Kb used=250994Kb max_used=257093Kb free=11149Kb
 bounds [0x000002e112de0000, 0x000002e122de0000, 0x000002e122de0000]
CodeCache is full. Compiler has been disabled.
 total_blobs=48597 nmethods=47335 adapters=1164
OpenJDK 64-Bit Server VM warning: Try increasing the code cache size using -XX:ReservedCodeCacheSize=
 compilation: enabled

> Task :compiler:tests-common-new:test

63638 tests completed, 5 failed, 11654 skipped
``