[K2] Avoid type check for Kotlin's property in ConstUtils

When we check Java field for constant initializer, we could
be asked to get and check the type of Kotlin's property that
is used in this Java field. But there is no guarantee that the type
resolve phase was finished and this type is available. So we just
check for `const` modifier and skip type check.

#KT-63752 Fixed
#KT-62558 Obsolete
#KT-61786 Declined

compiler/fir/java/src/org/jetbrains/kotlin/fir/java/enhancement/SignatureEnhancement.kt

@@ -125,7 +125,7 @@ class FirSignatureEnhancement(
                     predefinedEnhancementInfo = null
                 ).let {
                     val lowerBound = it.type.lowerBoundIfFlexible()
-                    if ((lowerBound.isString || lowerBound.isInt) && firElement.isStatic && firElement.hasConstantInitializer) {
+                    if (lowerBound.isString && firElement.isStatic && firElement.hasConstantInitializer) {
                         it.withReplacedConeType(it.type.withNullability(ConeNullability.NOT_NULL, session.typeContext))
                     } else {
                         it