update tests

Author: Zzzen

tests/cases/fourslash/extractFunctionContainingThis3.ts

@@ -10,7 +10,7 @@
 ////}
 
 goTo.select("start", "end");
-verify.not.refactorAvailable("Extract Symbol", "function_scope_0");
+verify.refactorAvailable("Extract Symbol", "function_scope_0");
 verify.refactorAvailable("Extract Symbol", "function_scope_1");
 
 goTo.select("start", "end");

tests/cases/fourslash/extractFunctionContainingThis5.ts renamed to tests/cases/fourslash/extractFunctionContainingThis4.ts

@@ -12,7 +12,7 @@
 
 goTo.select("start", "end");
 // cannot extract it to method, reason: Cannot extract method to a function-like scope that is not a function
-verify.not.refactorAvailable("Extract Symbol", "function_scope_1");
+verify.refactorAvailable("Extract Symbol", "function_scope_1");
 verify.not.refactorAvailable("Extract Symbol", "function_scope_2");
 verify.refactorAvailable("Extract Symbol", "function_scope_3");