Add --no-background-compilation to tests that expect to run code in optimized form

tests/language/inline_getter_test.dart

Index: tests/language/inline_getter_test.dart
diff --git a/tests/language/inline_getter_test.dart b/tests/language/inline_getter_test.dart
index ba83a23331d48721c38c888d0c90d543d9cfb348..41430d3b0da021d63b6c6b332f4970a4b73bde40 100644
--- a/tests/language/inline_getter_test.dart
+++ b/tests/language/inline_getter_test.dart
@@ -4,7 +4,7 @@
 // Test inlining of instance getters.
 // Three classes access always the same field. Optimize method foo and inline
 // getter for classes 'A' and 'B'. Call later via 'C' and cause deoptimization.
-// VMOptions=--optimization-counter-threshold=10 --no-use-osr
+// VMOptions=--optimization-counter-threshold=10 --no-use-osr --no-background-compilation
 
 import "package:expect/expect.dart";