Fix an issue that autofill didn't work with compose apps as described on #2371. Closes #2371. Closes #2590 which is a prototype for this commit.

src/Kp2aAutofillParser/AutofillParser.cs

@@ -730,7 +730,7 @@ namespace Kp2aAutofillParser
     {
         public List<TField> InputFields { get; set; } = new List<TField>();
 
-        public string PackageId { get; set; } = null;
+        public string? PackageId { get; set; } = null;
         public string WebDomain { get; set; } = null;
     }
 

src/keepass2android-app/services/AutofillBase/StructureParser.cs

@@ -86,6 +86,8 @@ namespace keepass2android.services.AutofillBase
                 ParseRecursive(autofillView, view, isManualRequest);
             }
 
+            autofillView.PackageId = autofillView.PackageId ?? _structure.ActivityComponent.PackageName;
+
             return autofillView;
 
         }
@@ -122,7 +124,6 @@ namespace keepass2android.services.AutofillBase
             }
 
             autofillView.InputFields.Add(new ViewNodeInputField(viewNode));
-          
             var childrenSize = viewNode.ChildCount;
             if (childrenSize > 0)
             {