FIR: add proper receiver check for protected visibility #KT-48378 Fixed

compiler/fir/analysis-tests/testData/resolveWithStdlib/intellij/FieldVsSyntheticAccessor.fir.txt

@@ -0,0 +1,19 @@
+FILE: User.kt
+    public final class User : R|BaseClass| {
+        public constructor(): R|test/User| {
+            super<R|BaseClass|>()
+        }
+
+        public final fun foo(tree: R|BaseClass|): R|kotlin/Unit| {
+            lval ui: R|ft<kotlin/String, kotlin/String?>| = R|<local>/tree|.<HIDDEN: /BaseClass.ui is invisible>#
+        }
+
+        public final fun bar(): R|kotlin/Unit| {
+            lval ui: R|ft<kotlin/String, kotlin/String?>| = this@R|test/User|.R|/BaseClass.ui|
+        }
+
+        public final fun baz(): R|kotlin/Unit| {
+            lval ui: R|ft<kotlin/String, kotlin/String?>| = this@R|test/User|.R|/BaseClass.ui|
+        }
+
+    }

compiler/fir/analysis-tests/testData/resolveWithStdlib/intellij/FieldVsSyntheticAccessor.kt

@@ -0,0 +1,23 @@
+// FILE: BaseClass.java
+
+public class BaseClass {
+    protected String ui = "";
+}
+
+// FILE: User.kt
+
+package test
+
+class User : BaseClass() {
+    fun foo(tree: BaseClass) {
+        val ui = tree.<!INVISIBLE_REFERENCE!>ui<!>
+    }
+
+    fun bar() {
+        val ui = ui
+    }
+
+    fun baz() {
+        val ui = this.ui
+    }
+}