Re-export doesn't work properly with --splitting

[egoist]

Repro:

// a.ts
export const a = 1

// b.ts
export { a } from './a'

esbuild a.ts b.ts --outdir=dist--format=esm --bundle --splitting

Output:

a.js:

import {
  a
} from "./chunk.xL6KqlYO.js";

// a.ts
export {
  a
};

b.js:

import "./chunk.xL6KqlYO.js";
// ↑↑ ERROR: should be `import { a } from "./chunk.xL6KqlYO.js";`

// b.ts
export {
  a
};

chunk.xL6KqlYO.js:

// a.ts
const a = 1;

export {
  a
};