fix conditional block branch evaluation for all expression types (#4428)

skyvern/forge/prompts/skyvern/conditional-prompt-branch-evaluation.j2

@@ -1,14 +1,14 @@
-You are evaluating conditional branches for a workflow. Return the results to tell me whether each natural language criterion is satisfied.
-
-Criteria (order matters; align outputs to these indices):
-{% for criterion in branch_criteria -%}
-- {{ criterion.index }}: {{ criterion.expression }}
+Evaluate if the following condition(s) are TRUE or FALSE.
+{% if conditions|length == 1 %}
+Condition: {{ conditions[0] }}
+{% else %}
+{% for condition in conditions %}
+Condition {{ loop.index }}: {{ condition }}
 {% endfor %}
+{% endif %}
+{% if context_json %}
 
-Context (use this data to evaluate each criterion; if a value is absent, treat it as missing/Falsey):
-{{ context_snapshot }}
+Use this context to understand variable values:
+{{ context_json }}
+{% endif %}
 
-Respond with JSON exactly in this shape:
-{
-  "branch_results": [true | false per criterion, in order]
-}