[Mobile] Don't return StateFlow from method

MobileConnectionsRepositoryImpl#subscriptionModelForSubId was creating a
StateFlow for each subscription that it returned. This is an incorrect
usage since that `stateIn` call starts a new job to collect from the
underlying flow, and it is never canceled until the scope is canceled.
The scope being used is the @Application scope, so it's effectively
never canceled.

It seems that this was not a load bearing StateFlow, so this CL just
removes the `stateIn` call to fix that issue.

Test: tests in statusbar/pipeline/mobile
Bug: 317205264
Flag: NONE
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:f9027a5955112c1162be3da5bff66d6fefcae3f2)
Merged-In: I82ddc7576e2b8d45574be6f0c3f0176da9457bb9
Change-Id: I82ddc7576e2b8d45574be6f0c3f0176da9457bb9

packages/SystemUI/src/com/android/systemui/statusbar/pipeline/mobile/data/repository/prod/FullMobileConnectionRepository.kt

@@ -27,6 +27,7 @@ import com.android.systemui.statusbar.pipeline.mobile.data.repository.MobileConn
 import javax.inject.Inject
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.ExperimentalCoroutinesApi
+import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.flow.MutableStateFlow
 import kotlinx.coroutines.flow.SharingStarted
 import kotlinx.coroutines.flow.StateFlow
@@ -48,7 +49,7 @@ class FullMobileConnectionRepository(
     override val subId: Int,
     startingIsCarrierMerged: Boolean,
     override val tableLogBuffer: TableLogBuffer,
-    subscriptionModel: StateFlow<SubscriptionModel?>,
+    subscriptionModel: Flow<SubscriptionModel?>,
     private val defaultNetworkName: NetworkNameModel,
     private val networkNameSeparator: String,
     @Application scope: CoroutineScope,
@@ -331,7 +332,7 @@ class FullMobileConnectionRepository(
         fun build(
             subId: Int,
             startingIsCarrierMerged: Boolean,
-            subscriptionModel: StateFlow<SubscriptionModel?>,
+            subscriptionModel: Flow<SubscriptionModel?>,
             defaultNetworkName: NetworkNameModel,
             networkNameSeparator: String,
         ): FullMobileConnectionRepository {

packages/SystemUI/src/com/android/systemui/statusbar/pipeline/mobile/data/repository/prod/MobileConnectionRepositoryImpl.kt

@@ -96,7 +96,7 @@ import kotlinx.coroutines.withContext
 class MobileConnectionRepositoryImpl(
     override val subId: Int,
     private val context: Context,
-    subscriptionModel: StateFlow<SubscriptionModel?>,
+    subscriptionModel: Flow<SubscriptionModel?>,
     defaultNetworkName: NetworkNameModel,
     networkNameSeparator: String,
     connectivityManager: ConnectivityManager,
@@ -448,7 +448,7 @@ class MobileConnectionRepositoryImpl(
         fun build(
             subId: Int,
             mobileLogger: TableLogBuffer,
-            subscriptionModel: StateFlow<SubscriptionModel?>,
+            subscriptionModel: Flow<SubscriptionModel?>,
             defaultNetworkName: NetworkNameModel,
             networkNameSeparator: String,
         ): MobileConnectionRepository {

packages/SystemUI/src/com/android/systemui/statusbar/pipeline/mobile/data/repository/prod/MobileConnectionsRepositoryImpl.kt

@@ -357,10 +357,10 @@ constructor(
 
     @VisibleForTesting fun getSubIdRepoCache() = subIdRepositoryCache
 
-    private fun subscriptionModelForSubId(subId: Int): StateFlow<SubscriptionModel?> {
-        return subscriptions
-            .map { list -> list.firstOrNull { model -> model.subscriptionId == subId } }
-            .stateIn(scope, SharingStarted.WhileSubscribed(), null)
+    private fun subscriptionModelForSubId(subId: Int): Flow<SubscriptionModel?> {
+        return subscriptions.map { list ->
+            list.firstOrNull { model -> model.subscriptionId == subId }
+        }
     }
 
     private fun createRepositoryForSubId(subId: Int): FullMobileConnectionRepository {