Move JSON parsing under try in order to ensure invalid JSON is handled

src/git-istage/Services/KeyBindingService.cs

@@ -68,18 +68,18 @@ public string GetUserKeyBindingsPath()
             ReadCommentHandling = JsonCommentHandling.Skip
         };
 
-        // The built-in dictionary deserialization doesn't like it when it finds a $schema key.
-        // Since the schema is only useful for editors, we just remove it before attempting to
-        // deserialize.
-
-        if (JsonNode.Parse(content) is JsonObject jsonObject)
-        {
-            if (jsonObject.Remove("$schema"))
-                content = jsonObject.ToJsonString();
-        }
-
         try
         {
+            // The built-in dictionary deserialization doesn't like it when it finds a $schema key.
+            // Since the schema is only useful for editors, we just remove it before attempting to
+            // deserialize.
+
+            if (JsonNode.Parse(content) is JsonObject jsonObject)
+            {
+                if (jsonObject.Remove("$schema"))
+                    content = jsonObject.ToJsonString();
+            }
+
             return JsonSerializer.Deserialize<Dictionary<string, CustomKeyBinding?>>(content, options);
         }
         catch (JsonException ex)