FIR: Fix test data after making LHS of assignment an expression

KT-54648

compiler/testData/diagnostics/testsWithStdLib/builderInference/unsafeAssignment.fir.kt

@@ -12,10 +12,10 @@ fun main(arg: Any) {
         run { a; this }.a = <!ASSIGNMENT_TYPE_MISMATCH!>10<!>
         a += 1
         this.a = <!ASSIGNMENT_TYPE_MISMATCH!>57<!>
-        this.(a) = 57
+        this.<!ILLEGAL_SELECTOR, VARIABLE_EXPECTED!>(a)<!> = 57
         a = <!ASSIGNMENT_TYPE_MISMATCH!>x<!>
         (a) = <!ASSIGNMENT_TYPE_MISMATCH!>x<!>
-        a.<!FUNCTION_CALL_EXPECTED!>hashCode<!> = 99
+        a.<!FUNCTION_CALL_EXPECTED, VARIABLE_EXPECTED!>hashCode<!> = 99
         if (arg is String) {
             a = arg
         }