fix(blueprint): leave isolatedModules off by default

Author: dfreeman

blueprint-files/ember-cli-typescript/tsconfig.json

@@ -3,7 +3,6 @@
     "target": "es2017",
     "allowJs": true,
     "moduleResolution": "node",
-    "isolatedModules": true,
     "allowSyntheticDefaultImports": true,
     "noImplicitAny": true,
     "noImplicitThis": true,

ts/tests/blueprints/ember-cli-typescript-test.js

@@ -72,7 +72,6 @@ describe('Acceptance: ember-cli-typescript generator', function() {
 
         expect(tsconfigJson.compilerOptions.inlineSourceMap).to.equal(true);
         expect(tsconfigJson.compilerOptions.inlineSources).to.equal(true);
-        expect(tsconfigJson.compilerOptions.isolatedModules).to.equal(true);
 
         expect(tsconfigJson.include).to.deep.equal(['app/**/*', 'tests/**/*', 'types/**/*']);