Revert "avoiding two force unwraps by using a goal's owner's username"

This reverts commit 1f3af669fdc5296092b8df4eba0d3d7f855ee226.

removing a commit that did not directly contribute to the solution

BeeKit/Managers/GoalManager.swift

@@ -72,7 +72,7 @@ public actor GoalManager {
     public func refreshGoal(_ goalID: NSManagedObjectID) async throws {
         let goal = try modelContext.existingObject(with: goalID) as! Goal
 
-        let responseObject = try await requestManager.get(url: "/api/v1/users/\(goal.owner.username)/goals/\(goal.slug)?datapoints_count=5", parameters: nil)
+        let responseObject = try await requestManager.get(url: "/api/v1/users/\(currentUserManager.username!)/goals/\(goal.slug)?datapoints_count=5", parameters: nil)
         let goalJSON = JSON(responseObject!)
 
         // The goal may have changed during the network operation, reload latest version
@@ -85,7 +85,7 @@ public actor GoalManager {
     }
 
     public func forceAutodataRefresh(_ goal: Goal) async throws {
-        let _ = try await requestManager.get(url: "/api/v1/users/\(goal.owner.username)/goals/\(goal.slug)/refresh_graph.json", parameters: nil)
+        let _ = try await requestManager.get(url: "/api/v1/users/\(currentUserManager.username!)/goals/\(goal.slug)/refresh_graph.json", parameters: nil)
     }
 
     private func updateGoalsFromJson(_ responseJSON: JSON) {