Add T-compiler backports Zulip notifications
This patch make it so, that the triagebot willl send notifications to the Zulip channel [#t-compiler/backports](https://rust-lang.zulipchat.com/#narrow/channel/474880-t-compiler.2Fbackports) when a label `{stable-beta}-nominated` is added to beta or stable backport pull request. Requirement to trigger this notification is that the pull request be labeled `T-compiler`.
Note: Zulip notifications can send notifications also on other events (`message_on_close` and `message_on_reopen`) but I omitted them for now, I am not yet sure we need them.
r? `@davidtwco`
triagebot: Better message for changes to `tests/rustdoc-json`
Followup to #140689 / #140606
Adds a message to changes to `tests/rustdoc-json`, instead of just pinging me. Hopefully this makes the significance of these tests clearer to people who otherwise wouldn't have context, so hopefully we can avoid that happening again. It's annoyingly hard to know how well this works, because the real test is seeing if it doesn't get ignored.
Predrag has [kindly offered](https://github.com/rust-lang/rust/issues/140689#issuecomment-2855602664) to also get pinged here.
cc ``@jyn514`` ``@obi1kenobi``
r? ``@GuillaumeGomez``
Rollup of 6 pull requests
Successful merges:
- #138992 (literal pattern lowering: use the pattern's type instead of the literal's in `const_to_pat`)
- #139211 (interpret: add a version of run_for_validation for &self)
- #139235 (`AstValidator` tweaks)
- #139237 (Add a dep kind for use of the anon node with zero dependencies)
- #139260 (Add dianqk to codegen reviewers)
- #139264 (Fix two incorrect turbofish suggestions)
r? `@ghost`
`@rustbot` modify labels: rollup
Remove cjgillot from automated review assignment
As discussed [on Zulip](https://rust-lang.zulipchat.com/#narrow/channel/131828-t-compiler/topic/Review.20for.20.23137465/with/508540539).
To be clear, this is not a value judgement, it's just a way to improve our fairness when assigning reviews, trying to find a balance between leaving time to Rust contributors review on their terms and availability and avoid having PRs waiting for too long.
> [!IMPORTANT]
> This is not a final decision! Rust contributors are free to re-add themselves back to the active review rotation (if they feel like it) once they have more availability.
cc: `@cjgillot`
Slightly reword triagebot ping message for `relnotes-interest-group`
Now that there's also a meta relnotes tracking issue.
r? ```@cuviper``` (or release)
