Fix issue with undefined coordinates when editing site information

Update the site editing form in `client/src/pages/sites.tsx` to initialize latitude and longitude fields with empty strings instead of undefined, resolving the "address undefined" error.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: e5565357-90e1-419f-b9a8-6ee8394636df
Replit-Commit-Checkpoint-Type: full_checkpoint
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/6d543d2c-20b9-4ea6-93fe-70fe9b1d9f80/e5565357-90e1-419f-b9a8-6ee8394636df/HdlP8Fl

.replit

@@ -20,9 +20,13 @@ localPort = 33035
 externalPort = 3001
 
 [[ports]]
-localPort = 41295
+localPort = 33963
 externalPort = 5173
 
+[[ports]]
+localPort = 41295
+externalPort = 6000
+
 [[ports]]
 localPort = 41343
 externalPort = 3000

client/src/pages/sites.tsx

@@ -220,6 +220,8 @@ export default function Sites() {
     editForm.reset({
       name: site.name,
       address: site.address,
+      latitude: site.latitude || "",
+      longitude: site.longitude || "",
       customerId: site.customerId ?? undefined,
       location: site.location,
       serviceTypeId: site.serviceTypeId ?? undefined,
@@ -231,8 +233,6 @@ export default function Sites() {
       contractEndDate: site.contractEndDate || undefined,
       serviceStartTime: site.serviceStartTime || "",
       serviceEndTime: site.serviceEndTime || "",
-      latitude: site.latitude || undefined,
-      longitude: site.longitude || undefined,
       isActive: site.isActive,
     });
   };