✨ (setVariable) Add Transcription system var (#1507)

Closes #1484

packages/schemas/features/blocks/logic/setVariable/constants.ts

@@ -5,6 +5,7 @@ export const valueTypes = [
   'Empty',
   'Append value(s)',
   'Environment name',
+  'Transcript',
   'User ID',
   'Result ID',
   'Now',
@@ -20,6 +21,8 @@ export const valueTypes = [
 
 export const hiddenTypes = ['Today', 'User ID'] as const
 
+export const sessionOnlySetVariableOptions = ['Transcript'] as const
+
 export const defaultSetVariableOptions = {
   type: 'Custom',
   isExecutedOnClient: false,

packages/schemas/features/blocks/logic/setVariable/schema.ts

@@ -21,6 +21,7 @@ const basicSetVariableOptionsSchema = baseOptions.extend({
     'Random ID',
     'Phone number',
     'Contact name',
+    'Transcript',
   ]),
 })