Add test to verify no error when 'React' is not in scope

tests/baselines/reference/tsxPreserveEmit2.js

@@ -0,0 +1,10 @@
+//// [test.tsx]
+
+
+var Route: any;
+var routes1 = <Route />;
+
+
+//// [test.jsx]
+var Route;
+var routes1 = <Route />;

tests/baselines/reference/tsxPreserveEmit2.symbols

@@ -0,0 +1,10 @@
+=== tests/cases/conformance/jsx/test.tsx ===
+
+
+var Route: any;
+>Route : Symbol(Route, Decl(test.tsx, 2, 3))
+
+var routes1 = <Route />;
+>routes1 : Symbol(routes1, Decl(test.tsx, 3, 3))
+>Route : Symbol(Route, Decl(test.tsx, 2, 3))
+

tests/baselines/reference/tsxPreserveEmit2.types

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+=== tests/cases/conformance/jsx/test.tsx ===
+
+
+var Route: any;
+>Route : any
+
+var routes1 = <Route />;
+>routes1 : any
+><Route /> : any
+>Route : any
+

tests/cases/conformance/jsx/tsxPreserveEmit2.tsx

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+//@module: amd
+//@jsx: preserve
+//@target: ES5
+
+//@Filename: test.tsx
+
+var Route: any;
+var routes1 = <Route />;