`functions.logger` output is ugly in the emulators

### [REQUIRED] Environment info

**firebase-tools:** 9.12.0

**Platform:** all

### [REQUIRED] Test case

```
const functions = require("firebase-functions");

exports.loggerTest = functions.https.onRequest((request, response) => {
functions.logger.info("functions.logger");
functions.logger.info("functions.logger with structure", { structuredData: true });
console.log("console.log");
console.warn("console.warn");

response.send("Hello from Firebase!");
});
```

### [REQUIRED] Steps to reproduce

Run the function above.

### [REQUIRED] Expected behavior

Clean and uncluttered logging output.

### [REQUIRED] Actual behavior

Even simple messages via `functions.logger`are presented as complex JSON objects. This is not the case for `console.log`

**Logging Emulator**

**Console**