KT-11104 extra : "wrap with safe let call" is now applicable for argument type mismatches

idea/testData/quickfix/wrapWithSafeLetCall/argumentNullable.kt

@@ -0,0 +1,8 @@
+// "Wrap with '?.let { ... }' call" "true"
+// WITH_RUNTIME
+
+fun foo(x: String?) {
+    bar(<caret>x)
+}
+
+fun bar(s: String) = s.hashCode()

idea/testData/quickfix/wrapWithSafeLetCall/argumentNullable.kt.after

@@ -0,0 +1,8 @@
+// "Wrap with '?.let { ... }' call" "true"
+// WITH_RUNTIME
+
+fun foo(x: String?) {
+    x?.let { bar(it) }
+}
+
+fun bar(s: String) = s.hashCode()