183: Fix exception about unmapped lambda argument from IDE inspection

Intention: obtain lambda argument for some parent call,
 then get that call (for the lambda argument) and map
 the argument to the parameter.

 Before the fix, we were getting call for inner element,
 not for the lambda argument and as a result, there were exceptions.

 #KT-26873 Fixed

idea/src/org/jetbrains/kotlin/idea/inspections/blockingCallsDetection/CoroutineNonBlockingContextChecker.kt.183

@@ -44,7 +44,7 @@ class CoroutineNonBlockingContextChecker : NonBlockingContextChecker {
             .firstOrNull { it is KtLambdaExpression && it.analyze().get(BindingContext.LAMBDA_INVOCATIONS, it) == null }
         val containingArgument = PsiTreeUtil.getParentOfType(containingLambda, KtValueArgument::class.java)
         if (containingArgument != null) {
-            val callExpression = PsiTreeUtil.getParentOfType(element, KtCallExpression::class.java) ?: return false
+            val callExpression = PsiTreeUtil.getParentOfType(containingArgument, KtCallExpression::class.java) ?: return false
             val call = callExpression.resolveToCall(BodyResolveMode.FULL) ?: return false
 
             val hasBlockingAnnotation = call.getFirstArgument()?.resolveToCall()

idea/testData/inspections/blockingCallsDetection/NestedFunctionsInsideSuspendLambda.kt.183

@@ -0,0 +1,11 @@
+fun <T> runBlocking(<warning descr="[UNUSED_PARAMETER] Parameter 'block' is never used">block</warning>: suspend CoroutineScope.() -> T): T = TODO()
+
+class CoroutineScope
+
+fun test() {
+    runBlocking {
+        repeat(1) {
+            java.lang.Thread.<warning descr="Inappropriate blocking method call">sleep</warning>(2)
+        }
+    }
+}

idea/tests/org/jetbrains/kotlin/idea/inspections/CoroutineNonBlockingontextDetectionTest.kt.183

@@ -38,4 +38,9 @@ class CoroutineNonBlockingontextDetectionTest: KotlinLightCodeInsightFixtureTest
         myFixture.configureByFile("LambdaReceiverTypeCheck.kt")
         myFixture.testHighlighting(true, false, false, "LambdaReceiverTypeCheck.kt")
     }
+
+    fun testNestedFunctionsInsideSuspendLambda() {
+        myFixture.configureByFile("NestedFunctionsInsideSuspendLambda.kt")
+        myFixture.testHighlighting(true, false, false, "NestedFunctionsInsideSuspendLambda.kt")
+    }
 }