RAW FIR: use special name for default setter parameter

FE1.0 descpritor, PSI2IR, and JVM IR backend use that.
FIR2IR is also using that, which implies name "value" in RAW FIR
maybe has not been used anywhere.

compiler/fir/tree/src/org/jetbrains/kotlin/fir/declarations/impl/FirDefaultPropertyAccessor.kt

@@ -25,6 +25,7 @@ import org.jetbrains.kotlin.fir.symbols.impl.FirValueParameterSymbol
 import org.jetbrains.kotlin.fir.types.ConeSimpleKotlinType
 import org.jetbrains.kotlin.fir.types.FirTypeRef
 import org.jetbrains.kotlin.fir.types.impl.FirImplicitUnitTypeRef
+import org.jetbrains.kotlin.name.SpecialNames
 
 @OptIn(FirImplementationDetail::class)
 abstract class FirDefaultPropertyAccessor(
@@ -143,7 +144,7 @@ class FirDefaultPropertySetter(
             this@builder.moduleData = moduleData
             this@builder.origin = origin
             this@builder.returnTypeRef = propertyTypeRef
-            this@builder.symbol = FirValueParameterSymbol(StandardNames.DEFAULT_VALUE_PARAMETER)
+            this@builder.symbol = FirValueParameterSymbol(SpecialNames.IMPLICIT_SET_PARAMETER)
             this@builder.annotations += parameterAnnotations
         }
     ),