collab: Use StripeClient in sync_subscription (#31761)

This PR updates the `sync_subscription` function to use the
`StripeClient` trait instead of using `stripe::Client` directly.

Release Notes:

- N/A

---------

Co-authored-by: Ben Brandt <benjamin.j.brandt@gmail.com>

crates/collab/src/db/tables/billing_subscription.rs

@@ -1,4 +1,5 @@
 use crate::db::{BillingCustomerId, BillingSubscriptionId};
+use crate::stripe_client;
 use chrono::{Datelike as _, NaiveDate, Utc};
 use sea_orm::entity::prelude::*;
 use serde::Serialize;
@@ -159,3 +160,17 @@ pub enum StripeCancellationReason {
     #[sea_orm(string_value = "payment_failed")]
     PaymentFailed,
 }
+
+impl From<stripe_client::StripeCancellationDetailsReason> for StripeCancellationReason {
+    fn from(value: stripe_client::StripeCancellationDetailsReason) -> Self {
+        match value {
+            stripe_client::StripeCancellationDetailsReason::CancellationRequested => {
+                Self::CancellationRequested
+            }
+            stripe_client::StripeCancellationDetailsReason::PaymentDisputed => {
+                Self::PaymentDisputed
+            }
+            stripe_client::StripeCancellationDetailsReason::PaymentFailed => Self::PaymentFailed,
+        }
+    }
+}