Don't add in size of disabled projects

(cherry picked from commit 2721a8c8b4)

src/server/editorServices.ts

@@ -874,7 +874,7 @@ namespace ts.server {
                 }
                 totalNonTsFileSize += this.host.getFileSize(fileName);
                 if (totalNonTsFileSize > maxProgramSizeForNonTsFiles) {
-                    this.projectToSizeMap[name] = totalNonTsFileSize;
+                    // Keep the size as zero since it's disabled
                     return true;
                 }
             }