[FIR IDE] Add unwrapping substitution overrides which doesn't affect function's signature

Also, do not use PSI to restore SUBSTITUTION_OVERRIDE function/property
symbols

analysis/analysis-api/testData/symbols/symbolByReference/genericFromOuterClassInInnerClass.kt

@@ -0,0 +1,16 @@
+// DO_NOT_CHECK_SYMBOL_RESTORE
+package test
+
+class SomeClass
+
+class TopLevel<Outer> {
+    inner open class Base<T> {
+        fun withOuter(): Outer? = null
+    }
+
+    inner class Child : Base<SomeClass> {}
+
+    fun usage() {
+        Child().<caret>withOuter()
+    }
+}