Simplify message expression from lambda argument when converting assert to if.

idea/testData/intentions/convertAssertToIf/lambdaMultiStatementMessageInsideParentheses.kt

@@ -0,0 +1,7 @@
+// WITH_RUNTIME
+fun foo() {
+    <caret>assert(true, {
+        val value = 1
+        "text and $value"
+    })
+}