Check if modality is refined in "Redundant modifier" inspection

idea/testData/inspections/allOpenSimple/inspectionData/expected.xml

@@ -0,0 +1,19 @@
+<problems>
+    <problem>
+        <file>test.kt</file>
+        <line>22</line>
+        <module>light_idea_test_case</module>
+        <entry_point TYPE="file" FQNAME="temp:///src/test.kt" />
+        <problem_class severity="WARNING" attribute_key="NOT_USED_ELEMENT_ATTRIBUTES">Redundant modality modifier</problem_class>
+        <description>Redundant modality modifier</description>
+    </problem>
+
+    <problem>
+        <file>test.kt</file>
+        <line>23</line>
+        <module>light_idea_test_case</module>
+        <entry_point TYPE="file" FQNAME="temp:///src/test.kt" />
+        <problem_class severity="WARNING" attribute_key="NOT_USED_ELEMENT_ATTRIBUTES">Redundant modality modifier</problem_class>
+        <description>Redundant modality modifier</description>
+    </problem>
+</problems>

idea/testData/inspections/allOpenSimple/inspectionData/inspections.test

@@ -0,0 +1 @@
+// INSPECTION_CLASS: org.jetbrains.kotlin.idea.inspections.RedundantModalityModifierInspection

idea/testData/inspections/allOpenSimple/test.kt

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+annotation class AllOpen
+
+@AllOpen
+class TestWithAllOpen {
+    val prop: String = ""
+    fun method() {}
+
+    open val openProp: String = ""
+    open fun openMethod() {}
+
+    final val finalProp: String = ""
+    final fun finalMethod() {}
+}
+
+class TestWithoutAllOpen {
+    val prop: String = ""
+    fun method() {}
+
+    open val openProp: String = ""
+    open fun openMethod() {}
+
+    final val finalProp: String = ""
+    final fun finalMethod() {}
+}