[Dataconnect] : Try running a query in VS code cause a failure

### [REQUIRED] Environment info
VS Code version of the plugin is 1.8.0...but the error is also on the 1.9.0

**firebase-tools:** 14.20.0

**Platform:** macOS

### [REQUIRED] Test case

Create a Query with a check on variable input like this:
query GetInvitation($email: String!, $invitationId: UUID!) @auth(level: PUBLIC, insecureReason: "Need to check prior being loggedIn"){
invitation(key: {
id: $invitationId
}){
id,
email @check(expr: "this == email", message: "[502] : Invitation does not match")
}
}

### [REQUIRED] Steps to reproduce

Tr to execute the query using the Data connect execution and you will get an error.

This is not true, because we are using it in the @check

### [REQUIRED] Expected behavior
No Error :-)

### [REQUIRED] Actual behavior