Fix tests

Author: nicolasstucki

tests/neg/i4433.scala

@@ -1,7 +1,7 @@
 
 object Foo {
   inline def g(inline p: Int => Boolean): Boolean = ${ // error
-    if(p(5)) 'true
-    else 'false
+    if(p(5)) '{true}
+    else '{false}
   }
 }

tests/neg/quote-splice-interpret-1.scala

@@ -3,7 +3,7 @@ import scala.quoted._
 
 object Macros {
   inline def isZero(inline n: Int): Boolean = ${ // error
-    if (n == 0) 'true
-    else 'false
+    if (n == 0) '{true}
+    else '{false}
   }
 }