Recompile agentic workflow lockfiles and refresh pinned AW metadata (#10315)

This addresses stale generated Agentic Workflow artifacts by recompiling
the workflow sources and updating the checked-in lock outputs. The
update brings lockfiles and shared action pin metadata back in sync with
the current compiler/runtime generation.

- **Scope of regeneration**
- Recompiled all Agentic Workflow markdown definitions in
`.github/workflows/*.md` into their corresponding `.lock.yml` outputs.
- Updated generated maintenance workflow output in
`.github/workflows/agentics-maintenance.yml`.

- **Pinned dependency/metadata refresh**
- Refreshed `.github/aw/actions-lock.json` and lockfile manifests
(actions, container digests, compiler metadata) to the latest generated
state.
- Resulting lock headers now reflect the current compiler/toolchain
metadata used for generation.

- **Auth/runtime shape in generated lockfiles**
- Regenerated lock outputs include current AW-generated runtime/env
wiring for Copilot execution paths and token handling where applicable.

```yaml
# Example (lockfile header after regeneration)
# gh-aw-metadata:
#   compiler_version: "v0.83.4"
```

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>

.github/aw/actions-lock.json

@@ -29,11 +29,6 @@
       "repo": "actions/upload-artifact",
       "version": "v7.0.1",
       "sha": "043fb46d1a93c77aae656e7c1c64a875d1fc6a0a"
-    },
-    "github/gh-aw-actions/setup@v0.81.6": {
-      "repo": "github/gh-aw-actions/setup",
-      "version": "v0.81.6",
-      "sha": "ba6380cc6e5be5d21677bebe04d52fb48e3abec7"
     }
   },
   "containers": {