[FIR, IR] Cleanup: drop redundant enumConstructorsAreAlwaysCompatible

It's constantly true in FIR and IR (it was false in K1)

Also see: 8b9079d026

Review: https://jetbrains.team/p/kt/reviews/12750/timeline

compiler/resolution.common/src/org/jetbrains/kotlin/resolve/calls/mpp/AbstractExpectActualChecker.kt

@@ -328,7 +328,6 @@ object AbstractExpectActualChecker {
         }
 
         if (
-            enumConstructorsAreAlwaysCompatible &&
             expectContainingClass?.classKind == ClassKind.ENUM_CLASS &&
             actualContainingClass?.classKind == ClassKind.ENUM_CLASS &&
             expectDeclaration is ConstructorSymbolMarker &&

compiler/resolution.common/src/org/jetbrains/kotlin/resolve/calls/mpp/AbstractExpectActualMatcher.kt

@@ -180,7 +180,6 @@ object AbstractExpectActualMatcher {
         }
 
         if (
-            enumConstructorsAreAlwaysCompatible &&
             expectContainingClass?.classKind == ClassKind.ENUM_CLASS &&
             actualContainingClass?.classKind == ClassKind.ENUM_CLASS &&
             expectDeclaration is ConstructorSymbolMarker &&

compiler/resolution.common/src/org/jetbrains/kotlin/resolve/calls/mpp/ExpectActualMatchingContext.kt

@@ -35,9 +35,6 @@ interface ExpectActualMatchingContext<T : DeclarationSymbolMarker> : TypeSystemC
     val innerClassesCapturesOuterTypeParameters: Boolean
         get() = true
 
-    val enumConstructorsAreAlwaysCompatible: Boolean
-        get() = false
-
     // Try to drop it once KT-61105 is fixed
     val shouldCheckAbsenceOfDefaultParamsInActual: Boolean