[Web] Don't cache emsdk

Due to how caches are accessed this cache is almost useless, it only
matters if it is from the same branch or a base branch, and is identical
between branches, so caching it just clutters the build cache

(cherry picked from commit 1e3b24f658c0c60f1d2b3a16dcf1ee99ffd6f1a0)

.github/workflows/ci.yml

@@ -92,7 +92,6 @@ jobs:
     env:
       SCONS_CACHE: ${{ github.workspace }}/.scons-cache/
       EM_VERSION: 3.1.39
-      EM_CACHE_FOLDER: emsdk-cache
 
     steps:
       - name: Checkout
@@ -123,7 +122,7 @@ jobs:
         uses: mymindstorm/setup-emsdk@v14
         with:
           version: ${{ env.EM_VERSION }}
-          actions-cache-folder: ${{ env.EM_CACHE_FOLDER }}
+          no-cache: true
 
       - name: Setup MinGW for Windows/MinGW build
         if: matrix.platform == 'windows' && matrix.flags == 'use_mingw=yes'