fix: always mark template literal as supported

Author: stipsan

playground/multi-export/src/pure.ts

@@ -2,5 +2,5 @@ import {answer} from 'dummy-side-effects'
 
 /** @public */
 export function getAnswer() {
-  return answer
+  return `answer:${answer}`
 }

src/node/tasks/rollup/resolveRollupConfig.ts

@@ -100,6 +100,9 @@ export function resolveRollupConfig(
       tsconfig: ctx.ts.configPath || 'tsconfig.json',
       treeShaking: true,
       minifySyntax: config?.minify !== false,
+      supported: {
+        'template-literal': true,
+      },
     }),
     Array.isArray(config?.babel?.plugins) &&
       getBabelOutputPlugin({