fix(examples): port SSL check templates to property-scoped grammar

The advanced-project and advanced-project-js templates still called the
flat SslAssertionBuilder methods (certExpiresInDays, chainTrusted,
hostnameVerified, tlsVersion) removed by the property-scoped grammar
refactor.

These are not documentation-only: create-checkly downloads them as
github:checkly/checkly-cli/examples/<template>#<version> and pins
checkly to 'latest', so once the new grammar ships, scaffolding the
recommended template and running checkly test/deploy would fail with
"SslAssertionBuilder.certExpiresInDays is not a function".

Semantics are unchanged; the synthesized wire payload is equivalent.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: sorccu

examples/advanced-project-js/src/__checks__/uptime/ssl.check.js

@@ -18,10 +18,10 @@ new SslMonitor('example-com-ssl', {
       alertDaysBeforeExpiry: 30,
     },
     assertions: [
-      SslAssertionBuilder.certExpiresInDays().greaterThan(30),
-      SslAssertionBuilder.chainTrusted().equals(true),
-      SslAssertionBuilder.hostnameVerified().equals(true),
-      SslAssertionBuilder.tlsVersion().equals('TLS1.3'),
+      SslAssertionBuilder.certificate('daysUntilExpiry').greaterThan(30),
+      SslAssertionBuilder.connection('chainTrusted').equals(true),
+      SslAssertionBuilder.connection('hostnameVerified').equals(true),
+      SslAssertionBuilder.connection('tlsVersion').equals('TLS1.3'),
     ],
   },
 })

examples/advanced-project/src/__checks__/uptime/ssl.check.ts

@@ -18,10 +18,10 @@ new SslMonitor('example-com-ssl', {
       alertDaysBeforeExpiry: 30,
     },
     assertions: [
-      SslAssertionBuilder.certExpiresInDays().greaterThan(30),
-      SslAssertionBuilder.chainTrusted().equals(true),
-      SslAssertionBuilder.hostnameVerified().equals(true),
-      SslAssertionBuilder.tlsVersion().equals('TLS1.3'),
+      SslAssertionBuilder.certificate('daysUntilExpiry').greaterThan(30),
+      SslAssertionBuilder.connection('chainTrusted').equals(true),
+      SslAssertionBuilder.connection('hostnameVerified').equals(true),
+      SslAssertionBuilder.connection('tlsVersion').equals('TLS1.3'),
     ],
   },
 })