Use exposed CTFPlayer::m_bRegenerating netprop

Valve made this a networked property with the 2021-12-21 update, so
we don't have to worry about offset breakages any more.

Unless they revert the change in which case aaaaaaa

scripting/cwx.sp

@@ -68,8 +68,6 @@ ConVar mp_stalemate_meleeonly;
 
 int g_attrdef_AllowedInMedievalMode;
 
-any offs_CTFPlayer_m_bRegenerating;
-
 public APLRes AskPluginLoad2(Handle self, bool late, char[] error, int maxlen) {
 	RegPluginLibrary("cwx");
 
@@ -114,15 +112,6 @@ public void OnPluginStart() {
 
 	mp_stalemate_meleeonly = FindConVar("mp_stalemate_meleeonly");
 
-	any offs_CTFPlayer_m_hItem = FindSendPropInfo("CTFPlayer", "m_hItem");
-	if (!offs_CTFPlayer_m_hItem) {
-		SetFailState("Failed to resolve member offset CTFPlayer::m_bRegenerating");
-	}
-
-	// m_hItem is dword-aligned, the previous dword contains at least 1 unknown bool value
-	// this is consistent between Windows / Linux
-	offs_CTFPlayer_m_bRegenerating = offs_CTFPlayer_m_hItem - 5;
-
 	// TODO: I'd like to use a separate, independent database for this
 	// but leveraging the cookie system is easier for now
 	char cookieName[64], cookieDesc[128];
@@ -476,13 +465,9 @@ void OnLoadoutRespawnPreference(QueryCookie cookie, int client, ConVarQueryResul
 
 	// mark player as regenerating during respawn -- this prevents stickies from despawning
 	// this matches the game's internal behavior during GC loadout changes
-	SetPlayerRegenerationState(client, true);
+	SetEntProp(client, Prop_Send, "m_bRegenerating", true);
 	TF2_RespawnPlayer(client);
-	SetPlayerRegenerationState(client, false);
-}
-
-void SetPlayerRegenerationState(int client, bool value) {
-	SetEntData(client, offs_CTFPlayer_m_bRegenerating, value, .size = 1);
+	SetEntProp(client, Prop_Send, "m_bRegenerating", false);
 }
 
 /**