Enable vue/no-side-effects-in-computed-properties and refactor computed state sync

Co-Authored-By: Codex <codex@openai.com>

src/components/Discover/Conformance/ConformanceSidebar.vue

@@ -96,7 +96,7 @@
             type="button"
             class="btn btn-sm"
             @click="submitConformance"
-            :class="isMainBtnDisabled ? 'btn-disable' : 'btn-neutral'"
+            :class="isApplyBtnDisabled ? 'btn-disable' : 'btn-neutral'"
             :disabled="isApplyBtnDisabled"
           >
             {{ i18next.t("Global.Apply") }}
@@ -208,7 +208,6 @@ const {
 const { activityRadioData } = storeToRefs(conformanceInputStore);
 
 // data
-const isMainBtnDisabled = ref(true);
 const isShowBarOpen = ref(false);
 const selectConformanceTask = ref(null);
 const selectConformanceStartAndEnd = ref(null); // Activity sequence
@@ -386,8 +385,7 @@ const isApplyBtnDisabled = computed(() => {
       break;
   }
 
-  isMainBtnDisabled.value = disabledBool;
-  return isMainBtnDisabled.value;
+  return disabledBool;
 });
 
 // watch