Improve sort detection

Before, we relied on the startup data object to detect whether the sort
options were compatible with this feature or not, which gave a wrong
veredict if those options were changed without reloading the page.

This change detects those options much more reliably, as it now parses
the last ViewForum request body to search for those settings.

Bug: twpowertools:5, twpowertools:22
Change-Id: Ic00200f51b611197c0158f9497597af47bee9581
diff --git a/src/common/xhrInterceptors.json5 b/src/common/xhrInterceptors.json5
index 6a5a1c5..63bec85 100644
--- a/src/common/xhrInterceptors.json5
+++ b/src/common/xhrInterceptors.json5
@@ -1,6 +1,11 @@
 {
   interceptors: [
     {
+      eventName: "ViewForumRequest",
+      urlRegex: "api/ViewForum",
+      intercepts: "request",
+    },
+    {
       eventName: "ViewForumResponse",
       urlRegex: "api/ViewForum",
       intercepts: "response",