Shorten the names of Mysterium rewards.

I seem to have forgotten that SDL `STRING32` variables have a fixed
length of 32 bytes. Sigh. So we must limit our names to this. Therefore,
I have renamed the shirts to "LSMysterium2021" and "SSMysterium2021".
The SDL string "LSMysterium2021;SSMysterium2021" will use up the
entirety of the 32 byte string buffer.

sources/avatar/clothing_fan02/Fan02.json

@@ -16,7 +16,7 @@
       ],
       "clItems": [
         {
-          "name": "MReward_ShortSleeve_Mysterium2021",
+          "name": "MReward_SSMysterium2021",
           "type": "Shirt",
           "group": "Male",
           "icon": "Icon_UTorso_Shirt_Mysterium2021.png",
@@ -48,7 +48,7 @@
           ]
         },
         {
-          "name": "MReward_LongSleeve_Mysterium2021",
+          "name": "MReward_LSMysterium2021",
           "type": "Shirt",
           "group": "Male",
           "icon": "Icon_UTorso_Shirt_Mysterium2021.png",
@@ -157,7 +157,7 @@
       ],
       "clItems": [
         {
-          "name": "FReward_ShortSleeve_Mysterium2021",
+          "name": "FReward_SSMysterium2021",
           "type": "Shirt",
           "group": "Female",
           "icon": "Icon_UTorso_Shirt_Mysterium2021.png",
@@ -188,7 +188,7 @@
           ]
         },
         {
-          "name": "FReward_LongSleeve_Mysterium2021",
+          "name": "FReward_LSMysterium2021",
           "type": "Shirt",
           "group": "Female",
           "icon": "Icon_UTorso_Shirt_Mysterium2021.png",