fix(template): guard optional property in nested test

The optional-nested test was failing after stricter optional property checks were added. This change wraps the 'age' variable in the template with an optional guard to align with the model.

Fixes #112

Signed-off-by: OmarElzero <omarmohmed7659944@gmail.com>

Author: OmarElzero

test/__snapshots__/TemplateMarkInterpreter.test.ts.snap

@@ -3522,10 +3522,20 @@ exports[`templatemark interpreter should generate optional-nested 1`] = `
                       "$class": "org.accordproject.commonmark@0.5.0.Emph",
                       "nodes": [
                         {
-                          "$class": "org.accordproject.ciceromark@0.6.0.Variable",
+                          "$class": "org.accordproject.ciceromark@0.6.0.Optional",
                           "elementType": "Integer",
+                          "hasSome": true,
                           "name": "age",
-                          "value": "42",
+                          "nodes": [
+                            {
+                              "$class": "org.accordproject.ciceromark@0.6.0.Variable",
+                              "elementType": "Integer",
+                              "name": "this",
+                              "value": "42",
+                            },
+                          ],
+                          "whenNone": [],
+                          "whenSome": [],
                         },
                       ],
                     },
@@ -3577,7 +3587,7 @@ exports[`templatemark interpreter should generate optional-nested 1`] = `
               ],
             },
           ],
-          "tight": "true",
+          "tight": "false",
           "type": "bullet",
         },
         {

test/templates/good/optional-nested/template.md

@@ -36,7 +36,8 @@
  {{country}}  
  {{/clause}}
 
-- You are *{{age}}* years old
+- You are *{{#optional age}}{{this}}{{/optional}}* years old
+
 - Your monthly salary is {{salary as "0,0.00 CCC"}}
 - Your favorite colours are {{#join favoriteColors}}