Replace loose equality (== null, != null) with strict equality

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/views/Files/Files.vue

@@ -357,7 +357,7 @@
       },
       allFiles: {
         handler(newValue) {
-          if(newValue != null) this.compareData = JSON.parse(JSON.stringify(newValue));
+          if(newValue !== null) this.compareData = JSON.parse(JSON.stringify(newValue));
         }
       },
       reallyDeleteData: {

src/views/Upload/index.vue

@@ -320,7 +320,7 @@ export default {
   beforeRouteEnter(to, from, next){
     // 要有 uploadID 才能進來
     next(vm => {
-      if(vm.uploadId == null) {
+      if(vm.uploadId === null) {
         vm.$router.push({name: 'Files', replace: true});
         vm.$toast.default('Please upload your file.', {position: 'bottom'});
       }