fix: match quarto's runtime dir path in julia engine test

The test's quartoRuntimeDir() reimplementation added a "quarto" segment
to the XDG_RUNTIME_DIR path, but quarto's actual xdgUserRuntimeDir does
not append the app name when XDG_RUNTIME_DIR is set. This caused the
test to delete the log file at the wrong path on Linux CI, leaving the
real log file intact and failing the "log file doesn't exist" step.

Author: gordonwoodhull

src/resources/extension-subtrees/julia-engine/tests/smoke/julia-engine/julia.test.ts

@@ -23,11 +23,14 @@ function quartoRuntimeDir(): string {
       base = join(Deno.env.get("LOCALAPPDATA")!, "quarto");
       break;
     default: {
+      // Note: quarto's xdgUserRuntimeDir does not append the app name
+      // when XDG_RUNTIME_DIR is set (unlike the other XDG dir functions).
       const xdgRuntime = Deno.env.get("XDG_RUNTIME_DIR");
       if (xdgRuntime) {
-        base = join(xdgRuntime, "quarto");
+        base = xdgRuntime;
       } else {
-        const cacheHome = Deno.env.get("XDG_CACHE_HOME") ?? join(Deno.env.get("HOME")!, ".cache");
+        const cacheHome = Deno.env.get("XDG_CACHE_HOME") ??
+          join(Deno.env.get("HOME")!, ".cache");
         base = join(cacheHome, "quarto");
       }
       break;
@@ -185,7 +188,10 @@ Deno.test("julia engine", async (t) => {
       },
     ).outputSync();
     assertSuccess(force_close_output);
-    assertStderrIncludes(force_close_output, "Worker force-closed successfully");
+    assertStderrIncludes(
+      force_close_output,
+      "Worker force-closed successfully",
+    );
 
     const status_output_2 = new Deno.Command(
       quartoCmd(),