test(bash-lint): track "Detect Azure CLI on host" generator in REQUIRED_STEP_DISPLAY_NAMES (#904)

The azure_cli extension (src/compile/extensions/azure_cli.rs) emits two bash
steps per compiled pipeline:

  1. detection_step()   → "Detect Azure CLI on host (for AWF mount)"
  2. prompt_append_step() → "Append Azure CLI prompt"

"Append Azure CLI prompt" was already tracked. "Detect Azure CLI on host
(for AWF mount)" was exercised by every fixture (it is always-on) but was
not explicitly listed in REQUIRED_STEP_DISPLAY_NAMES.

Adding the entry makes both bash outputs from the same generator explicitly
tracked, so a display-name rename or the extension becoming conditional would
be caught before merge.

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: github-actions[bot]

tests/bash_lint_tests.rs

@@ -116,6 +116,7 @@ const REQUIRED_STEP_DISPLAY_NAMES: &[&str] = &[
     "Resolve ADO organization",               // src/engine.rs copilot_install_from_nuget (1ES, no org)
     "Append Node prompt",   // src/runtimes/node/extension.rs via wrap_prompt_append("Node")
     "Append dotnet prompt", // src/runtimes/dotnet/extension.rs via wrap_prompt_append("dotnet")
+    "Detect Azure CLI on host (for AWF mount)", // src/compile/extensions/azure_cli.rs detection_step()
     "Append Azure CLI prompt", // src/compile/extensions/azure_cli.rs conditional prompt-append step
     "ado-aw",               // src/compile/extensions/ado_aw_marker.rs metadata marker step
     "Stage PR execution context (aw-context/pr/*)", // src/compile/extensions/exec_context/pr.rs