[FIR Java] Soften rules for matching types for may-be-special-builtins

This commit is workaround for cases like
MyJavaMap<KK : Bound, V> : java.util.Map<K, V>.
After signature changing and substitution we have
MyJavaMap.get(Object) declared and MyJavaMap.get(KK) from supertype,
which can't be otherwise matched as overriding one another.

compiler/fir/analysis-tests/testData/resolveWithStdlib/problems/EnumMapGet.kt

@@ -0,0 +1,9 @@
+// FULL_JDK
+
+import java.util.EnumMap
+
+typealias SomeEnumMap = EnumMap<String, String?>
+
+fun test(map: SomeEnumMap, qualifier: String?) {
+    val result = map[qualifier]
+}

compiler/fir/analysis-tests/testData/resolveWithStdlib/problems/EnumMapGet.txt

@@ -0,0 +1,5 @@
+FILE: EnumMapGet.kt
+    public final typealias SomeEnumMap = R|java/util/EnumMap<kotlin/String, kotlin/String?>|
+    public final fun test(map: R|SomeEnumMap|, qualifier: R|kotlin/String?|): R|kotlin/Unit| {
+        lval result: R|kotlin/String?| = R|<local>/map|.R|FakeOverride<java/util/EnumMap.get: R|kotlin/String?|>|(R|<local>/qualifier|)
+    }