FIR IDE: specify behaviour of HL API getOverriddenSymbols

- Split it into two functions getAllOverriddenSymbols and getDirectlyOverriddenSymbols
- Implement tests for getOverriddenSymbols
- temporary mute inheritance.kt light classes test

generators/tests/org/jetbrains/kotlin/generators/tests/GenerateTests.kt

@@ -89,6 +89,7 @@ import org.jetbrains.kotlin.idea.fir.low.level.api.sessions.AbstractSessionsInva
 import org.jetbrains.kotlin.idea.fir.low.level.api.trackers.AbstractProjectWideOutOfBlockKotlinModificationTrackerTest
 import org.jetbrains.kotlin.idea.folding.AbstractKotlinFoldingTest
 import org.jetbrains.kotlin.idea.frontend.api.components.AbstractExpectedExpressionTypeTest
+import org.jetbrains.kotlin.idea.frontend.api.components.AbstractOverriddenDeclarationProviderTest
 import org.jetbrains.kotlin.idea.frontend.api.components.AbstractReturnExpressionTargetTest
 import org.jetbrains.kotlin.idea.frontend.api.fir.AbstractResolveCallTest
 import org.jetbrains.kotlin.idea.frontend.api.scopes.AbstractFileScopeTest
@@ -1040,6 +1041,10 @@ fun main(args: Array<String>) {
             testClass<AbstractExpectedExpressionTypeTest> {
                 model("components/expectedExpressionType")
             }
+
+            testClass<AbstractOverriddenDeclarationProviderTest> {
+                model("components/overridenDeclarations")
+            }
         }
 
         testGroup("idea/idea-frontend-fir/idea-fir-low-level-api/tests", "idea/testData") {