[FIR] KT-44939: report REDUNDANT_VISIBILITY for explicit public overriding public

compiler/fir/analysis-tests/testData/resolve/extendedCheckers/RedundantVisibilityDueToOverride.fir.txt

@@ -0,0 +1,41 @@
+FILE: RedundantVisibilityDueToOverride.kt
+    public abstract class A : R|kotlin/Any| {
+        public constructor(): R|A| {
+            super<R|kotlin/Any|>()
+        }
+
+        public open var attribute: R|kotlin/String| = String(a)
+            public get(): R|kotlin/String|
+            protected set(value: R|kotlin/String|): R|kotlin/Unit|
+
+    }
+    public final class C1 : R|A| {
+        public constructor(): R|C1| {
+            super<R|A|>()
+        }
+
+        public final override var attribute: R|kotlin/String| = this@R|/C1|.super<R|A|>.R|/A.attribute|
+            public get(): R|kotlin/String|
+            public set(value: R|kotlin/String|): R|kotlin/Unit|
+
+    }
+    public abstract class B2 : R|A| {
+        public constructor(): R|B2| {
+            super<R|A|>()
+        }
+
+        public open override var attribute: R|kotlin/String| = String(b)
+            public get(): R|kotlin/String|
+            public set(value: R|kotlin/String|): R|kotlin/Unit|
+
+    }
+    public final class C2 : R|B2| {
+        public constructor(): R|C2| {
+            super<R|B2|>()
+        }
+
+        public final override var attribute: R|kotlin/String| = this@R|/C2|.super<R|B2|>.R|/B2.attribute|
+            public get(): R|kotlin/String|
+            public set(value: R|kotlin/String|): R|kotlin/Unit|
+
+    }

compiler/fir/analysis-tests/testData/resolve/extendedCheckers/RedundantVisibilityDueToOverride.kt

@@ -0,0 +1,18 @@
+abstract class A {
+    open var attribute = "a"
+        protected set
+}
+
+class C1 : A() {
+    <!REDUNDANT_VISIBILITY_MODIFIER!>public<!> override var attribute = super.attribute
+        public set
+}
+
+abstract class B2 : A() {
+    override var attribute = "b"
+        public set
+}
+
+class C2 : B2() {
+    <!REDUNDANT_VISIBILITY_MODIFIER!>public<!> override var attribute = super.attribute
+}