fireMessaging.tokenChanges emit wrong(not equeal) fcm token after fireMessaging.requestToken

### Version info

**Angular:*17.3.3*

**Firebase:*-*

**AngularFire:*17.1.0*

**Other (e.g. Ionic/Cordova, Node, browser, operating system):*browser*

### How to reproduce these conditions
1) Create subscription on fireMessaging.tokenChanges, can be several
2) Run fireMessaging.requestToken
3) Compare fcm token from tokenChanges & requestToken

Currently, we have different results, also each new subscription generates a new fcm token + additional HTTP requests

### Expected behavior

Same fcm tokens + only required numbers of HTTP requests

### Actual behavior

Different fcm tokens

Start by reproducing the behavior through the fireMessaging.tokenChanges subscription and fireMessaging.requestToken calls described in the issue, comparing emitted tokens and HTTP requests. Done means repeated subscriptions and an explicit request produce the same FCM token with only the required requests.

Written by the indexing model from the issue text.