Inform AI engine which endpoints are disabled on the backend (#6251)

# Description of Changes
Have the Java send a list of enabled endpoints to the AI engine so it
can intelligently respond to the user that the tool does exist but is
disabled on the server so it can't acutally run the operation, instead
of the current behaviour where it sends the API call back and then 503
errors because the execution fails when the URL is disabled.

<img width="380" height="208" alt="image"
src="https://github.com/user-attachments/assets/5842fb2e-2e55-45a5-8205-25515636daae"
/>

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Co-authored-by: EthanHealy01 <[email protected]>

app/proprietary/src/test/java/stirling/software/proprietary/service/AiWorkflowServiceTest.java

@@ -79,6 +79,7 @@ class AiWorkflowServiceTest {
     @Mock private FileStorage fileStorage;
     @Mock private ToolMetadataService toolMetadataService;
     @Mock private FileIdStrategy fileIdStrategy;
+    @Mock private AiEngineEndpointResolver endpointResolver;
 
     @TempDir Path tempDir;
 
@@ -110,7 +111,9 @@ class AiWorkflowServiceTest {
                         fileStorage,
                         toolMetadataService,
                         tempFileManager,
-                        fileIdStrategy);
+                        fileIdStrategy,
+                        endpointResolver);
+        when(endpointResolver.getEnabledEndpointUrls()).thenReturn(List.of());
     }
 
     @Test