[kotlin] [fir] enable search by base method (KTIJ-21662)

GitOrigin-RevId: 255219d64d4ad7d13d079ddd858336a047430ef4

plugins/kotlin/idea/tests/testData/findUsages/kotlin/conventions/invokeInheritance.0.kt

@@ -15,3 +15,4 @@ fun test() {
     c()
     c.invoke()
 }
+// FIR_COMPARISON

plugins/kotlin/kotlin.searching/src/org/jetbrains/kotlin/idea/searching/usages/KotlinK2FindUsagesSupport.kt

@@ -113,8 +113,10 @@ internal class KotlinK2FindUsagesSupport : KotlinFindUsagesSupport {
     }
 
     override fun getSuperMethods(declaration: KtDeclaration, ignore: Collection<PsiElement>?): List<PsiElement> {
-        // TODO: implement this
-        return emptyList()
+        if (!declaration.hasModifier(KtTokens.OVERRIDE_KEYWORD)) return emptyList()
+        return analyzeInModalWindow(declaration, KotlinBundle.message("find.usages.progress.text.declaration.superMethods")) {
+            (declaration.getSymbol() as? KtCallableSymbol)?.getAllOverriddenSymbols()?.mapNotNull { it.psi }?.toList().orEmpty()
+        }
     }
 
     override fun checkSuperMethods(