Convert template preprocess hooks in core/includes/theme.inc

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This now moves everything in theme.inc, but it's a lot: "115 files + 1291 − 775" (the template references add a lot of files, and the BC layer duplicated documention results in a lot of additional lines being added but that's mostly temporary)

I kept pager in a separate commit so far (has its own pretty large unit test that requires a lot of changes and it's a lot of code) and field preprocess as well (also a lot of code, references from other preprocess functions and a internal but used sort callback, see MR review).

My proposal would be to split those two up into separate issues. They will all conflict due to uses in theme.inc and ThemeCommonElements, but not much more I think.

There's also a question about internal vs final, especially those generic template preprocess functions like table and container are fairly frequently used in contrib. For me, being able to have them final and not worry about constructor BC is much more helpful then the public API of them, about the only thing that could happen is that we deprecate a template I think, then we could just deprecate it and let it be there.

Yes, as mentioned in #4, I've now split off #3519257: Convert template_preprocess_pager() and #3519259: Convert field template_preprocess functions in theme.inc now. I did add authorize report, it's trivial with only two uses and no dependencies and it helps #1177762: Deprecate automatic template_preprocess discovery and 'includes'/'file' support from hook_theme()

That removes the two most complex cases and about a third of the size off this one.

I did my best to not include any changes except DI and required reflowing of some comments due to the changed length limits due to them being two spaces more nested. Try using git diff 11.x --color-moved=dimmed_zebra --color-moved-ws=ignore-all-space` to review these issues. It should mark all lines that were just moved and not changed otherwise grey. Doesn't work for the docblocks because those are copied and there don't seem to be any options to highlight that.

Pipelines have issues, that's not the fault of this issue, unit tests not passing only on 8.4 is _extremely_ unlikely to be a real issue.

Soft blocked on #3519257: Convert template_preprocess_pager(), will rebase then to avoid further conflicts with that.

Rebased this as pager got in.

I skipped authorize_report as that's already deprecated now. We might want to move that into theme.inc in to so we can deprecate the file key, but no point in moving it to a service now.

Reminder: --color-moved is really useful to review this one, see https://www.md-systems.ch/en/blog/techblog/2011/08/22/git-aliases. all lines that are grey can be mostly ignored then as they haven't changed.

Added template_preprocess_tablesort_indicator() as that was recently added.

Also noticed that template_preprocess_pager() got in with inconsistent deprecation version number, fixed on 11.2 there.