Fixed error reporting for special constructions (if, elvis)

Track whether an error was reported for sub expressions (like 'if' branches) or it should be reported for the whole expression
 #KT-6189 Fixed

compiler/testData/diagnostics/tests/resolve/specialConstructions/constantsInIf.kt

@@ -0,0 +1,13 @@
+// !DIAGNOSTICS: -USELESS_ELVIS
+
+fun test() {
+    bar(if (true) {
+        <!CONSTANT_EXPECTED_TYPE_MISMATCH!>1<!>
+    } else {
+        <!CONSTANT_EXPECTED_TYPE_MISMATCH!>2<!>
+    })
+
+    bar(<!CONSTANT_EXPECTED_TYPE_MISMATCH!>1<!> ?: <!CONSTANT_EXPECTED_TYPE_MISMATCH!>2<!>)
+}
+
+fun bar(s: String) = s