Add rules from eslint's recommended set that triggered good lints (#50422)

src/server/editorServices.ts

@@ -940,7 +940,7 @@ namespace ts.server {
                 // raw is now fixed and ready
                 this.safelist = raw.typesMap;
                 for (const key in raw.simpleMap) {
-                    if (raw.simpleMap.hasOwnProperty(key)) {
+                    if (hasProperty(raw.simpleMap, key)) {
                         this.legacySafelist.set(key, raw.simpleMap[key].toLowerCase());
                     }
                 }

src/server/session.ts

@@ -297,7 +297,7 @@ namespace ts.server {
     interface ProjectNavigateToItems {
         project: Project;
         navigateToItems: readonly NavigateToItem[];
-    };
+    }
 
     function createDocumentSpanSet(): Set<DocumentSpan> {
         return createSet(({textSpan}) => textSpan.start + 100003 * textSpan.length, documentSpansEqual);