FIR: Rework loading overrides of special built-in methods from Java

Some of the changed data is correct, but some diagnostics are incorrect
Corner cases like having both contains(Object) and contains(String)
within implementation of Collection<String> is not supported

compiler/testData/loadJava/compiledJava/modality/ModalityOfFakeOverrides.fir.txt

@@ -1,8 +1,6 @@
 public open class ModalityOfFakeOverrides : R|java/util/AbstractList<ft<@FlexibleNullability kotlin/String, kotlin/String?>!>| {
     @R|java/lang/Override|() @R|org/jetbrains/annotations/NotNull|() public open operator fun get(index: R|kotlin/Int|): R|@EnhancedNullability kotlin/String|
 
-    @R|java/lang/Override|() public open fun size(): R|kotlin/Int|
-
     public constructor(): R|test/ModalityOfFakeOverrides|
 
 }