Fix drive letter casing on typescript tasks

Occurs when opening by double clicking on workspace file. Fixes #75084

extensions/typescript-language-features/src/features/task.ts

@@ -234,7 +234,7 @@ class TscTaskProvider implements vscode.TaskProvider {
 
 	private getLabelForTasks(project: TSConfig): string {
 		if (project.workspaceFolder) {
-			return path.posix.relative(project.workspaceFolder.uri.path, project.posixPath);
+			return path.posix.relative(path.posix.normalize(project.workspaceFolder.uri.path), path.posix.normalize(project.posixPath));
 		}
 		return project.posixPath;
 	}