Cache fix issues V2 (#5237)

# Description of Changes

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- What was changed
- Why the change was made
- Any challenges encountered

Closes #(issue_number)
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## Checklist

### General

- [ ] I have read the [Contribution
Guidelines](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/CONTRIBUTING.md)
- [ ] I have read the [Stirling-PDF Developer
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/DeveloperGuide.md)
(if applicable)
- [ ] I have read the [How to add new languages to
Stirling-PDF](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/HowToAddNewLanguage.md)
(if applicable)
- [ ] I have performed a self-review of my own code
- [ ] My changes generate no new warnings

### Documentation

- [ ] I have updated relevant docs on [Stirling-PDF's doc
repo](https://github.com/Stirling-Tools/Stirling-Tools.github.io/blob/main/docs/)
(if functionality has heavily changed)
- [ ] I have read the section [Add New Translation
Tags](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/HowToAddNewLanguage.md#add-new-translation-tags)
(for new translation tags only)

### UI Changes (if applicable)

- [ ] Screenshots or videos demonstrating the UI changes are attached
(e.g., as comments or direct attachments in the PR)

### Testing (if applicable)

- [ ] I have tested my changes locally. Refer to the [Testing
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/DeveloperGuide.md#6-testing)
for more details.

frontend/src/proprietary/routes/Login.tsx

@@ -109,13 +109,12 @@ export default function Login() {
           updateSupportedLanguages(data.languages, data.defaultLocale);
         }
 
-        // Extract provider IDs from the providerList map
-        // The keys are like "/oauth2/authorization/google" - extract the last part
-        const providerIds = Object.keys(data.providerList || {})
-          .map(key => key.split('/').pop())
-          .filter((id): id is string => id !== undefined);
+        // Use the full paths from providerList as provider identifiers
+        // The backend provides paths like "/oauth2/authorization/google" or "/saml2/authenticate/stirling"
+        // We'll use these full paths so the auth client knows where to redirect
+        const providerPaths = Object.keys(data.providerList || {});
 
-        setEnabledProviders(providerIds);
+        setEnabledProviders(providerPaths);
       } catch (err) {
         console.error('[Login] Failed to fetch enabled providers:', err);
       }