sp:1728 [FE] Build Curtain Dialog Component (#307)

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## Jira Ticket
[SP-1728](https://syncrow.atlassian.net/browse/SP-1728)

## Description

change the name  to curtain functions and conditions

## Type of Change

<!--- Put an `x` in all the boxes that apply: -->

- [ ] ✨ New feature (non-breaking change which adds functionality)
- [x] 🛠️ Bug fix (non-breaking change which fixes an issue)
- [ ] ❌ Breaking change (fix or feature that would cause existing
functionality to change)
- [ ] 🧹 Code refactor
- [ ] ✅ Build configuration change
- [ ] 📝 Documentation
- [ ] 🗑️ Chore 


[SP-1728]:
https://syncrow.atlassian.net/browse/SP-1728?atlOrigin=eyJpIjoiNWRkNTljNzYxNjVmNDY3MDlhMDU5Y2ZhYzA5YTRkZjUiLCJwIjoiZ2l0aHViLWNvbS1KU1cifQ

lib/pages/routines/widgets/routine_dialogs/curtain_dialog.dart

@@ -58,7 +58,9 @@ class CurtainHelper {
                 child: Column(
                   mainAxisSize: MainAxisSize.min,
                   children: [
-                    const DialogHeader('AC Functions'),
+                    DialogHeader(dialogType == 'THEN'
+                        ? 'Curtain Functions'
+                        : 'Curtain Conditions'),
                     Expanded(
                       child: Row(
                         crossAxisAlignment: CrossAxisAlignment.stretch,