ignore .git files for ext recommendations

fixes #86427

src/vs/workbench/contrib/extensions/browser/extensionTipsService.ts

@@ -755,6 +755,11 @@ export class ExtensionTipsService extends Disposable implements IExtensionTipsSe
 				return;
 			}
 
+			// ignore .git files
+			if (fileExtension === 'git') {
+				return;
+			}
+
 			await this.extensionService.whenInstalledExtensionsRegistered();
 			const mimeTypes = guessMimeTypes(uri);
 			if (mimeTypes.length !== 1 || mimeTypes[0] !== MIME_UNKNOWN) {