Nested lambda has shadowed implicit parameter: do not report when outer lambda 'it' is not used

#KT-26710 Fixed

idea/testData/inspectionsLocal/nestedLambdaShadowedImplicitParameter/implicit.kt

@@ -5,6 +5,7 @@ fun bar(s: String) {}
 
 fun test() {
     foo {
+        bar(it)
         foo {
             bar(it<caret>)
         }

idea/testData/inspectionsLocal/nestedLambdaShadowedImplicitParameter/implicit.kt.after

@@ -5,6 +5,7 @@ fun bar(s: String) {}
 
 fun test() {
     foo { it ->
+        bar(it)
         foo {
             bar(it)
         }

idea/testData/inspectionsLocal/nestedLambdaShadowedImplicitParameter/implicit3.kt

@@ -5,6 +5,7 @@ fun bar(s: String) {}
 
 fun test() {
     foo {
+        bar(it)
         foo {
             bar(it)
             bar(it)

idea/testData/inspectionsLocal/nestedLambdaShadowedImplicitParameter/implicit3.kt.after

@@ -5,6 +5,7 @@ fun bar(s: String) {}
 
 fun test() {
     foo {
+        bar(it)
         foo { it1 ->
             bar(it1)
             bar(it1)

idea/testData/inspectionsLocal/nestedLambdaShadowedImplicitParameter/implicitGrandParent.kt

@@ -5,6 +5,7 @@ fun bar(s: String) {}
 
 fun test() {
     foo {
+        bar(it)
         foo { s ->
             foo {
                 bar(it<caret>)

idea/testData/inspectionsLocal/nestedLambdaShadowedImplicitParameter/implicitGrandParent.kt.after

@@ -5,6 +5,7 @@ fun bar(s: String) {}
 
 fun test() {
     foo { it ->
+        bar(it)
         foo { s ->
             foo {
                 bar(it)

idea/testData/inspectionsLocal/nestedLambdaShadowedImplicitParameter/notUsedItInParentLambda.kt

@@ -0,0 +1,14 @@
+// PROBLEM: none
+
+fun foo(f: (String) -> Unit) {}
+fun bar(s: String) {}
+
+fun test() {
+    foo {
+        foo {
+            foo {
+                bar(it<caret>)
+            }
+        }
+    }
+}