Revert to last known good SDK (#33922)

Author: halter73

global.json

@@ -1,9 +1,9 @@
 {
   "sdk": {
-    "version": "6.0.100-preview.7.21327.2"
+    "version": "6.0.100-preview.6.21313.2"
   },
   "tools": {
-    "dotnet": "6.0.100-preview.7.21327.2",
+    "dotnet": "6.0.100-preview.6.21313.2",
     "runtimes": {
       "dotnet/x64": [
         "2.1.27",

src/Components/test/testassets/BasicTestApp/BasicTestApp.csproj

@@ -11,6 +11,7 @@
 
     <!-- Project supports more than one language -->
     <BlazorWebAssemblyLoadAllGlobalizationData>true</BlazorWebAssemblyLoadAllGlobalizationData>
+    <UseRazorSourceGenerator>false</UseRazorSourceGenerator>
   </PropertyGroup>
 
   <PropertyGroup Condition="'$(TestTrimmedApps)' == 'true'">