Stop sending err.message in telemetry (#13158)

* Stop sending err.message.

Author: sean-mcmanus

Extension/src/LanguageServer/extension.ts

@@ -1455,7 +1455,7 @@ async function onCopilotHover(): Promise<void> {
     } catch (err) {
         if (err instanceof vscode.LanguageModelError) {
             console.log(err.message, err.code, err.cause);
-            await reportCopilotFailure(copilotHoverProvider, hoverDocument, hoverPosition, err.message);
+            await reportCopilotFailure(copilotHoverProvider, hoverDocument, hoverPosition, err.code);
         } else {
             throw err;
         }
@@ -1475,9 +1475,12 @@ async function onCopilotHover(): Promise<void> {
             content += fragment;
         }
     } catch (err) {
-        if (err instanceof Error) {
+        if (err instanceof vscode.LanguageModelError) {
+            console.log(err.message, err.code, err.cause);
+            await reportCopilotFailure(copilotHoverProvider, hoverDocument, hoverPosition, err.code);
+        } else if (err instanceof Error) {
             console.log(err.message, err.cause);
-            await reportCopilotFailure(copilotHoverProvider, hoverDocument, hoverPosition, err.message);
+            await reportCopilotFailure(copilotHoverProvider, hoverDocument, hoverPosition, err.name);
         }
         return;
     }