feat: Use resolved contacts as base relation for filtering (#12520)

This PR has two changes to speed up contact filtering

### Updated Base Relation

Update the `base_relation` to use resolved contacts scope to improve
perf when filtering conversations. This narrows the search space
drastically, and what is usually a sequential scan becomes a index scan
for that `account_id`

ref: https://github.com/chatwoot/chatwoot/pull/9347
ref: https://github.com/chatwoot/chatwoot/pull/7175/

Result: https://explain.dalibo.com/plan/c8a8gb17f0275fgf#plan


## Selective filtering in Compose New Conversation

We also cost of filtering in compose new conversation dialog by reducing
the search space based on the search candidate. For instance, a search
term that obviously can’t be a phone, we exclude that from the filter.
Similarly we skip name lookups for email-shaped queries.

Removing the phone number took the query times from 50 seconds to under
1 seconds

### Comparison

1. Only Email: https://explain.dalibo.com/plan/h91a6844a4438a6a 
2. Email + Name: https://explain.dalibo.com/plan/beg3aah05ch9ade0
3. Email + Name + Phone:
https://explain.dalibo.com/plan/c8a8gb17f0275fgf

app/javascript/dashboard/components-next/NewConversation/components/ComposeNewConversationForm.vue

@@ -148,10 +148,21 @@ const isAnyDropdownActive = computed(() => {
 
 const handleContactSearch = value => {
   showContactsDropdown.value = true;
-  emit('searchContacts', {
-    keys: ['email', 'phone_number', 'name'],
-    query: value,
+  const query = typeof value === 'string' ? value.trim() : '';
+  const hasAlphabet = Array.from(query).some(char => {
+    const lower = char.toLowerCase();
+    const upper = char.toUpperCase();
+    return lower !== upper;
   });
+  const isEmailLike = /^[^\s@]+@[^\s@]+\.[^\s@]+$/.test(query);
+
+  const keys = ['email', 'phone_number', 'name'].filter(key => {
+    if (key === 'phone_number' && hasAlphabet) return false;
+    if (key === 'name' && isEmailLike) return false;
+    return true;
+  });
+
+  emit('searchContacts', { keys, query: value });
 };
 
 const handleDropdownUpdate = (type, value) => {