Remove isExpression flag and implement convertToIfCondition to align with Go parser architecture (#217)

workflow-parser/src/expressions.test.ts

@@ -194,10 +194,11 @@ jobs:
     const jobs = workflowRoot.get(1).value.assertMapping("jobs");
     const build = jobs.get(0).value.assertMapping("job");
     const ifToken = build.get(1).value;
-    expect(ifToken.toString()).toEqual("${{ github.event_name == 'push' }}");
+    // Without isExpression: true, the value is kept as a string until convertToIfCondition processes it
+    expect(ifToken.toString()).toEqual("github.event_name == 'push'");
 
-    if (!isBasicExpression(ifToken)) {
-      throw new Error("expected if to be a basic expression");
+    if (!isString(ifToken)) {
+      throw new Error("expected if to be a string (will be converted to expression later)");
     }
   });
 });