Updated how the HomeVC counts unread message request threads

Updated the HomeVC to count the threads with unread messages using the TSMessageRequestGroup instead of using the UnreadDatabaseView
Removed the OWSMessageUtils 'unreadMessageRequestCount' method

Session/Home/HomeVC.swift

@@ -7,7 +7,18 @@ final class HomeVC : BaseVC, UITableViewDataSource, UITableViewDelegate, NewConv
     private var threadViewModelCache: [String:ThreadViewModel] = [:] // Thread ID to ThreadViewModel
     private var tableViewTopConstraint: NSLayoutConstraint!
     private var unreadMessageRequestCount: UInt {
-        OWSMessageUtils.sharedManager().unreadMessageRequestCount()
+        var count: UInt = 0
+        
+        dbConnection.read { transaction in
+            let ext = transaction.ext(TSThreadDatabaseViewExtensionName) as! YapDatabaseViewTransaction
+            ext.enumerateRows(inGroup: TSMessageRequestGroup) { _, _, object, _, _, _ in
+                if ((object as? TSThread)?.unreadMessageCount(transaction: transaction) ?? 0) > 0 {
+                    count += 1
+                }
+            }
+        }
+        
+        return count
     }
     
     private var threadCount: UInt {

SignalUtilitiesKit/Messaging/OWSMessageUtils.h

@@ -16,7 +16,6 @@ NS_ASSUME_NONNULL_BEGIN
 + (instancetype)sharedManager;
 
 - (NSUInteger)unreadMessagesCount;
-- (NSUInteger)unreadMessageRequestCount;
 - (NSUInteger)unreadMessagesCountExcept:(TSThread *)thread;
 
 - (void)updateApplicationBadgeCount;

SignalUtilitiesKit/Messaging/OWSMessageUtils.m

@@ -93,27 +93,6 @@ NS_ASSUME_NONNULL_BEGIN
     return count;
 }
 
-- (NSUInteger)unreadMessageRequestCount {
-    __block NSUInteger count = 0;
-
-    [LKStorage readWithBlock:^(YapDatabaseReadTransaction *transaction) {
-        YapDatabaseViewTransaction *unreadMessages = [transaction ext:TSUnreadDatabaseViewExtensionName];
-        NSArray<NSString *> *allGroups = [unreadMessages allGroups];
-        // FIXME: Confusingly, `allGroups` includes contact threads as well
-        for (NSString *groupID in allGroups) {
-            TSThread *thread = [TSThread fetchObjectWithUniqueID:groupID transaction:transaction];
-            
-            // Only increase the count for message requests
-            if (![thread isMessageRequestUsingTransaction:transaction]) { continue; }
-            if ([unreadMessages numberOfItemsInGroup:groupID] > 0) {
-                count += 1;
-            }
-        }
-    }];
-
-    return count;
-}
-
 - (NSUInteger)unreadMessagesCountExcept:(TSThread *)thread
 {
     __block NSUInteger numberOfItems;