Fix compatibility issue with the new accessibility feature which is a…

…llowing interaction with objects using nameplates.

UnitReaction returns nil on those 'GameObject' instead of a number...

LNR will treat those objects as NEUTRAL

https://news.blizzard.com/en-gb/world-of-warcraft/23876525/accessibility-updates-in-dragonflight

LibNameplateRegistry-1.0/LibNameplateRegistry-1.0.lua

@@ -43,7 +43,7 @@ This file was last updated on @file-date-iso@ by @file-author@
 --
 
 -- Library framework {{{
-local MAJOR, MINOR = "LibNameplateRegistry-1.0", 19
+local MAJOR, MINOR = "LibNameplateRegistry-1.0", 20
 
 -- used to be set using debug packager tags but they've been broken ever since the new wowace.com...
 -- see: https://www.curseforge.com/forums/wow-sites/wow-sites-feedback/185461-curse-keyword-substitution-not-applied-for
@@ -343,7 +343,16 @@ function LNR_Private.RawGetPlateType (frame)
 
     local unitToken = LNR_Private:GetUnitTokenFromPlate(frame);
 
-    local reaction = UnitReaction('player', unitToken);
+    -- a recent accessibility update is using nameplates to display interaction
+    -- icons over GameObject on which UnitReaction returns nil.
+    -- In such case, return a number that will be interpreted as neutral
+    local reaction = UnitReaction('player', unitToken) or 3;
+
+    --@debug@
+    if DEBUG then
+        Debug(INFO, 'RawGetPlateType - unitToken:', unitToken, 'reaction:', UnitReaction('player', unitToken), 'final reaction:', reaction);
+    end
+    --@end-debug@
 
     if reaction > 4 then
         reaction = 'FRIENDLY';
@@ -354,7 +363,7 @@ function LNR_Private.RawGetPlateType (frame)
     end
 
     --TODO check if tapped state is still detectable in some ways (API removed in 7.0.3)
-    local unitType = UnitPlayerControlled(LNR_Private:GetUnitTokenFromPlate(frame)) and 'PLAYER' or 'NPC';
+    local unitType = UnitPlayerControlled(unitToken) and 'PLAYER' or 'NPC';
 
 
     return reaction, unitType;