C#: Include `.razor` files in `File::fromSource`

csharp/ql/integration-tests/all-platforms/cshtml/Files.ql

@@ -1,5 +1,5 @@
 import csharp
 
 from File f
-where f.fromSource() or f.getExtension() = "cshtml"
+where f.fromSource()
 select f

csharp/ql/lib/semmle/code/csharp/File.qll

@@ -61,7 +61,7 @@ class File extends Container, Impl::File {
 
   /** Holds if this file contains source code. */
   final predicate fromSource() {
-    this.getExtension() = ["cs", "cshtml"] and
+    this.getExtension() = ["cs", "cshtml", "razor"] and
     not this.isStub()
   }