Merge pull request #413 from mpretty-cyro/fix/potential-UI-deadlock

Fixed a potential deadlock which could occur when typing

Session/Conversations/Input View/InputView.swift

@@ -303,6 +303,7 @@ final class InputView: UIView, InputViewButtonDelegate, InputTextViewDelegate, M
         // Suggest that the user enable link previews if they haven't already and we haven't
         // told them about link previews yet
         let text = inputTextView.text!
+        DispatchQueue.global(qos: .userInitiated).async { [weak self, dependencies] in
             let areLinkPreviewsEnabled: Bool = dependencies[singleton: .storage, key: .areLinkPreviewsEnabled]
             
             if
@@ -310,7 +311,9 @@ final class InputView: UIView, InputViewButtonDelegate, InputTextViewDelegate, M
                 !areLinkPreviewsEnabled &&
                 !dependencies[defaults: .standard, key: .hasSeenLinkPreviewSuggestion]
             {
-            delegate?.showLinkPreviewSuggestionModal()
+                DispatchQueue.main.async {
+                    self?.delegate?.showLinkPreviewSuggestionModal()
+                }
                 dependencies[defaults: .standard, key: .hasSeenLinkPreviewSuggestion] = true
                 return
             }
@@ -318,7 +321,10 @@ final class InputView: UIView, InputViewButtonDelegate, InputTextViewDelegate, M
             guard areLinkPreviewsEnabled else { return }
             
             // Proceed
-        autoGenerateLinkPreview()
+            DispatchQueue.main.async {
+                self?.autoGenerateLinkPreview()
+            }
+        }
     }
 
     func autoGenerateLinkPreview() {