fix: Consistent default and working persistence

Author: PythonGermany

web/app/src/views/EndpointDetails.vue

@@ -224,7 +224,7 @@ const events = ref([])
 const currentPage = ref(1)
 const resultPageSize = 50
 const showResponseTimeChartAndBadges = ref(false)
-const showAverageResponseTime = ref(localStorage.getItem('gatus:show-average-response-time') === 'true' || false)
+const showAverageResponseTime = ref(localStorage.getItem('gatus:show-average-response-time') !== 'false')
 const selectedChartDuration = ref('24h')
 const isRefreshing = ref(false)
 

web/app/src/views/Home.vue

@@ -219,7 +219,7 @@ const itemsPerPage = 96
 const searchQuery = ref('')
 const showOnlyFailing = ref(false)
 const showRecentFailures = ref(false)
-const showAverageResponseTime = ref(localStorage.getItem('gatus:show-average-response-time') === 'true' || true)
+const showAverageResponseTime = ref(localStorage.getItem('gatus:show-average-response-time') !== 'false')
 const groupByGroup = ref(false)
 const sortBy = ref(localStorage.getItem('gatus:sort-by') || 'name')
 const uncollapsedGroups = ref(new Set())