fix(dnscaching): check dnsCache before init & support forceipv4 with caching (#1910)

* fix: ensure dnsCache is checked for when its enabled before initialization

previously dnsCache was being initialized even if it was disabled because the previous check was
always returning truthy.

fix #1857

* chore: update dns-caching to 0.2.6

This will allow dns-caching to respect forceIpv4 flag.

* chore: update dns-caching to 0.2.7

package.json

@@ -57,7 +57,7 @@
     "cronstrue": "2.23.0",
     "date-fns": "2.29.3",
     "dayjs": "1.11.7",
-    "dns-caching": "^0.2.5",
+    "dns-caching": "^0.2.7",
     "email-templates": "12.0.1",
     "email-validator": "2.0.4",
     "express": "4.21.2",

server/index.ts

@@ -82,7 +82,7 @@ app
     }
 
     // Add DNS caching
-    if (settings.network.dnsCache) {
+    if (settings.network.dnsCache?.enabled) {
       initializeDnsCache({
         forceMinTtl: settings.network.dnsCache.forceMinTtl,
         forceMaxTtl: settings.network.dnsCache.forceMaxTtl,