Add more WASM Substitutions (#37744)

* Add more WASM Substitutions

* Remove internal method

Author: marek-safar

src/mono/netcore/System.Private.CoreLib/src/ILLink/ILLink.Substitutions.wasm.xml

@@ -1,7 +1,13 @@
 <linker>
   <assembly fullname="System.Private.CoreLib">
     <type fullname="System.Numerics.Vector">
-      <method signature="System.Boolean get_IsHardwareAccelerated()" body="stub" value="false" /> 
+      <method signature="System.Boolean get_IsHardwareAccelerated()" body="stub" value="false" />
+    </type>
+    <type fullname="System.Environment">
+      <method signature="System.Int32 get_ProcessorCount()" body="stub" value="1" />
+    </type>
+    <type fullname="System.Runtime.CompilerServices.RuntimeFeature">
+      <method signature="System.Boolean get_IsDynamicCodeCompiled()" body="stub" value="false" />
     </type>
   </assembly>
 </linker>