Fix location dropdowns silently truncating at the 100-row backend cap

The backend clamps perpage to MAX_PAGE_SIZE (100), so location selectors that requested a large page received only the first page and still got a 200. Late-alphabet locations (past ~C5W) simply went missing from every module's dropdown, and no error surfaced.

Add locationsApi.listAll, which pages through the full set via fetchAllPages, matching the established machines/printers pattern, and switch every location selector consumer to it.

plugins/network/frontend/views/NetworkDeviceForm.vue

@@ -460,8 +460,8 @@ async function loadVendors() {
 
 async function loadLocations() {
   try {
-    const response = await locationsApi.list({ perpage: 100 })
-    locations.value = response.data.data || []
+    const items = await locationsApi.listAll()  // backend caps perpage at 100; page through all
+    locations.value = items || []
   } catch (err) {
     console.error('Error loading locations:', err)
   }

plugins/network/frontend/views/NetworkDevicesList.vue

@@ -197,8 +197,8 @@ async function loadVendors() {
 
 async function loadLocations() {
   try {
-    const response = await locationsApi.list({ perpage: 100 })
-    locations.value = response.data.data || []
+    const items = await locationsApi.listAll()  // backend caps perpage at 100; page through all
+    locations.value = items || []
   } catch (error) {
     console.error('Error loading locations:', error)
   }

plugins/network/frontend/views/SubnetsList.vue

@@ -352,8 +352,8 @@ async function loadVLANs() {
 
 async function loadLocations() {
   try {
-    const response = await locationsApi.list({ perpage: 100 })
-    locations.value = response.data.data || []
+    const items = await locationsApi.listAll()  // backend caps perpage at 100; page through all
+    locations.value = items || []
   } catch (err) {
     console.error('Error loading locations:', err)
   }