Correct behaviour for break / continue inside function call arguments, including multiple ones. Additional tests.

compiler/testData/diagnostics/tests/smartCasts/loops/safeCallBreakInsideDoWhile.kt

@@ -0,0 +1,14 @@
+fun foo(x: String): String? = x
+
+fun calc(x: String?, y: String?): Int {
+    do {
+        // Smart cast because of x!! in receiver
+        foo(x!!)?.subSequence(0, if (<!DEBUG_INFO_SMARTCAST!>x<!>.length() > 0) 5 else break)
+        y!!.length()
+        // x is not null in condition but we do not see it yet
+    } while (x<!UNSAFE_CALL!>.<!>length() > 0)
+    // y is nullable because of break
+    y<!UNSAFE_CALL!>.<!>length()
+    // x is not null, at least in theory
+    return <!DEBUG_INFO_SMARTCAST!>x<!>.length()
+}