Handle Java base class field read properly in IR converters

For FE 1.0, we just change super qualifier symbol to
base class, if it's possible.
For FIR, we introduce using of super qualifier symbols for
field accesses and repeat FE 1.0 behavior here.

#KT-49507 Fixed

compiler/testData/ir/irText/expressions/ambiguousFieldAccess.kt

@@ -0,0 +1,23 @@
+// SKIP_KLIB_TEST
+// Related to KT-49507
+// FILE: A.java
+public class A {
+    protected String x = "1";
+    protected String y = "2";
+    public static class B extends A {
+        protected String y = "3";
+    }
+}
+
+// FILE: test.kt
+
+package test
+
+fun <T> eval(f: () -> T) = f()
+
+class C : A.B() {
+    // Both x & y here should in fact be taken from B class: this.(super<B>.x), this.(super<B>.y)
+    fun f() = eval { x }
+    fun g() = eval { y }
+}
+