fix: register direct tooltip fallback for special objectives

Tests/QuestieQuestTooltipFallback_spec.lua

@@ -0,0 +1,21 @@
+describe("QuestieQuest tooltip fallback", function()
+    local function read(path)
+        local f = assert(io.open(path, "r"), "cannot open " .. path)
+        local c = f:read("*a")
+        f:close()
+        return c
+    end
+
+    local function has(content, needle)
+        return string.find(content, needle, 1, true) ~= nil
+    end
+
+    it("registers direct objective tooltips when special objectives have ids but no spawnList", function()
+        local questieQuest = read("Modules/Quest/QuestieQuest.lua")
+
+        assert.is_true(has(questieQuest, 'tooltipKey = "m_" .. objective.Id'))
+        assert.is_true(has(questieQuest, 'tooltipKey = "o_" .. objective.Id'))
+        assert.is_true(has(questieQuest, 'tooltipKey = "i_" .. objective.Id'))
+        assert.is_true(has(questieQuest, "objective.registeredItemTooltips = true"))
+    end)
+end)