[Fir2IR] Fix dispatch receiver of fake override lazy function

After the fix, it's at least consistent with what generated
for other fake overrides.

^KT-61386

compiler/testData/codegen/box/fir/callableReferenceToJavaField.kt

@@ -1,5 +1,4 @@
 // TARGET_BACKEND: JVM_IR
-// IGNORE_CODEGEN_WITH_IR_FAKE_OVERRIDE_GENERATION: KT-61386
 // DUMP_IR
 // FULL_JDK
 // WITH_REFLECT