Testing glint project mode with extensionless imports

Succeeds:

❯ pnpm ember-tsc -p .

Fails:

❯ pnpm ember-tsc -b  
js-entry.js:3:27 - error TS2307: Cannot find module './my-js-component' or its corresponding type declarations.

3 import MyJsComponent from "./my-js-component";
                            ~~~~~~~~~~~~~~~~~~~

ts-entry.ts:1:27 - error TS2307: Cannot find module './my-ts-component' or its corresponding type declarations.

1 import MyTsComponent from "./my-ts-component";
                            ~~~~~~~~~~~~~~~~~~~


Found 2 errors.