ci: disable cr.yml + autofix.yml auto-triggers (no-op for OA fork)

Both have been failing on every push since the fork diverged from upstream:

- `cr.yml`: tries to publish per-PR package previews via `pkg-pr-new`, which
  requires the matching GitHub App installed on the org. The app isn't
  installed on Open-Athena, so every run dies with
  `Check failed (404): The app https://github.com/apps/pkg-pr-new is not
  installed on Open-Athena/slidev`. We don't publish slidev packages from
  this fork, so the workflow has no purpose.
- `autofix.yml`: lint-fix bot fails with `The autofix.ci action is not
  allowed to modify the .github directory` because our fork edits workflow
  files outside its allowlist. The lint-staged pre-commit hook already runs
  eslint --fix locally, so the bot is redundant.

Switch both to `on: workflow_dispatch` (manual run only) instead of deleting,
so re-enabling them later is a one-line revert. Pages / smoke / test /
build-dist workflows are unaffected.

Author: ryan-williams

.github/workflows/autofix.yml

@@ -1,12 +1,14 @@
 name: autofix.ci
 
-on:
-  push:
-    branches:
-      - main
-  pull_request:
-    branches:
-      - main
+# Disabled for the Open-Athena fork: autofix-ci/action fails with `The
+# autofix.ci action is not allowed to modify the .github directory` on every
+# main push, because our fork edits workflow files (this one, `pages.yml`,
+# `build-dist.yml`) outside of autofix.ci's allowlist. We don't depend on the
+# bot to commit lint fixes from CI — the husky / lint-staged pre-commit hook
+# already runs eslint --fix locally. Manual `workflow_dispatch` stays
+# available if anyone wants to re-enable per-push autofix behaviour.
+on: workflow_dispatch
+
 permissions:
   contents: read
 

.github/workflows/cr.yml

@@ -1,6 +1,14 @@
 # Continuous Releases provided by https://pkg.pr.new
+#
+# Disabled for the Open-Athena fork: pkg-pr-new requires the `pkg-pr-new`
+# GitHub App to be installed on the org, which it isn't here. Every push was
+# failing with `Check failed (404): The app https://github.com/apps/pkg-pr-new
+# is not installed on Open-Athena/slidev`. We don't publish per-PR previews of
+# the slidev packages from this fork, so disable auto-triggers. Manual runs
+# stay available via `workflow_dispatch` if anyone wants to re-enable per-push
+# behaviour after installing the app.
 name: CR (Continuous Releases)
-on: [push, pull_request]
+on: workflow_dispatch
 
 jobs:
   cr: