chore: refactor legacy JS init code to use "data-global-init" (#39836)

Move the remaining legacy init code, which probed page classes with
`querySelector`, to `data-global-init`, so each feature initializes from
its own element. `hashchange` listeners now go through one module that
runs them in priority order, because independent listeners broke when
mount order changed.

- Convert issue list, diff, repo create, settings and org team inits to
`data-global-init`
- Run `hashchange` listeners by priority, the diff scroll handler last
- Make the devtest mock's failing log requests deterministic
- Add e2e tests for diff tree navigation to folded files and job log
permalinks

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Co-authored-by: silverwind <me@silverwind.io>

templates/devtest/repo-action-view.tmpl

@@ -6,6 +6,7 @@
 		<a href="{{AppSubUrl}}/devtest/repo-action-view/runs/30">Run:CanRerunLatest</a>
 		<a href="{{AppSubUrl}}/devtest/repo-action-view/runs/10/attempts/2">Run:PreviousAttempt</a>
 		<a href="{{AppSubUrl}}/devtest/repo-action-view/runs/40">Run:ReusableCaller</a>
+		<a href="{{AppSubUrl}}/devtest/repo-action-view/runs/50/jobs/500">Run:LogsAlwaysFail</a>
 	</div>
 	{{template "repo/actions/view_component" (dict
 		"JobID" (or .JobID 0)