Fix compile on save issues (#10615)

* only return .ts and .tsx files for affected document list
* Return all files exclude mixed-content files for CoS affected list

src/server/scriptInfo.ts

@@ -20,7 +20,7 @@ namespace ts.server {
             content: string,
             readonly scriptKind: ScriptKind,
             public isOpen = false,
-            private hasMixedContent = false) {
+            public hasMixedContent = false) {
 
             this.path = toPath(fileName, host.getCurrentDirectory(), createGetCanonicalFileName(host.useCaseSensitiveFileNames));
             this.svc = ScriptVersionCache.fromString(host, content);