[FIR-TEST] Get rid of deprecated methods usage in AbstractFirLoadCompiledKotlin

Now complied declaration names are collected via ModuleDescriptor,
  so tests pass more correctly. Before this change tests didn't render
  compiled typealiases and properties.
Also some testdata was changed because of new order of declaration

compiler/fir/analysis-tests/testData/loadCompiledKotlin/class/NamedObjectWithAnotherTopLevelProperty.txt

@@ -1,3 +1,6 @@
+public final val x: R|kotlin/Int|
+    public get(): R|kotlin/Int|
+
 public final object Obj : R|kotlin/Any| {
     public final fun f(): R|kotlin/String|
 
@@ -7,3 +10,4 @@ public final object Obj : R|kotlin/Any| {
     private constructor(): R|test/Obj|
 
 }
+