December 2024 and Winter Wonderland 2025 build (#15358)

* feat(content): Winter 2025 build by @CuriousMagpie

* fix(content): add more WW

* fix(content): add more WW

* chore(subproj): update habitica-images

* fix(gala): December 2024 is Winter 2025

* fix(content): lint, background typo, 0 index month

* fix(content): add missing mystery set name

* fix(content): roll back erroneous month indexing

* fix(tests): no 13th month, consider releases in schedule test

* update gear strings

* fix(seasonal): show quest modal

* fix(seasonal): use category-item component

* chore(subproj): update habitica-images

---------

Co-authored-by: CuriousMagpie <eilatan@gmail.com>

website/common/script/content/gear/sets/armoire.js

@@ -502,6 +502,10 @@ const armor = {
     per: 11,
     set: 'stormKnightSet',
   },
+  festiveHelperOveralls: {
+    con: 12,
+    set: 'festiveHelperSet',
+  },
 };
 
 const body = {
@@ -1027,6 +1031,10 @@ const head = {
     con: 11,
     set: 'stormKnightSet',
   },
+  festiveHelperHat: {
+    int: 12,
+    set: 'festiveHelperSet',
+  },
 };
 
 const shield = {