chore(cli): Don't assume deno is in path for spawn_kill_permissions (#19198)

We don't need to use the `deno` command here to test kill permissions
and it's awkward to get right without passing `-A`. `cat` works, but for
platforms other than windows. This test should have plenty of coverage
on other platforms.

cli/tests/integration/run_tests.rs

@@ -3434,8 +3434,9 @@ itest!(test_and_bench_are_noops_in_run {
   output_str: Some(""),
 });
 
+#[cfg(not(target_os = "windows"))]
 itest!(spawn_kill_permissions {
-  args: "run --quiet --unstable --allow-run=deno spawn_kill_permissions.ts",
+  args: "run --quiet --unstable --allow-run=cat spawn_kill_permissions.ts",
   output_str: Some(""),
 });
 

cli/tests/testdata/spawn_kill_permissions.ts

@@ -1,5 +1,5 @@
-const child = new Deno.Command("deno", {
-  args: ["eval", "await new Promise(r => setTimeout(r, 2000))"],
+const child = new Deno.Command("cat", {
+  args: ["-"],
   stdout: "null",
   stderr: "null",
 }).spawn();