Auto merge of #126557 - GrigorenkoPV:vec_track_caller, r=joboet

Add `#[track_caller]` to allocating methods of `Vec` & `VecDeque`

Part 4 in a lengthy saga.
r? `@joshtriplett` because they were the reviewer the last 3 times.
`@bors` rollup=never "[just in case this has perf effects, Vec is hot](rust-lang/rust#79323 (comment))"

This was first attempted in #79323 by `@nvzqz.` It got approval from `@joshtriplett,` but rotted with merge conflicts and got closed.

Then it got picked up by `@Dylan-DPC-zz` in #83359. A benchmark was run[^perf], the results (after a bit of thinking[^thinking]) were deemed ok[^ok], but there was a typo[^typo] and the PR was made from a wrong remote in the first place[^remote], so #83909 was opened instead.

By the time #83909 rolled around, the methods in question had received some optimizations[^optimizations], so another perf run was conducted[^perf2]. The results were ok[^ok2]. There was a suggestion to add regression tests for panic behavior [^tests], but before it could be addressed, the PR fell victim to merge conflicts[^conflicts] and died again[^rip].

3 years have passed, and (from what I can tell) this has not been tried again, so here I am now, reviving this old effort.

Given how much time has passed and the fact that I've also touched `VecDeque` this time, it probably makes sense to
`@bors` try `@rust-timer`

[^perf]: rust-lang/rust#83359 (comment)
[^thinking]: rust-lang/rust#83359 (comment)
[^ok]: rust-lang/rust#83359 (comment)
[^typo]: rust-lang/rust#83359 (comment)
[^remote]: rust-lang/rust#83359 (comment)
[^optimizations]: rust-lang/rust#83909 (comment)
[^perf2]: rust-lang/rust#83909 (comment)
[^ok2]: rust-lang/rust#83909 (comment)
[^tests]: rust-lang/rust#83909 (comment)
[^conflicts]: rust-lang/rust#83909 (comment)
[^rip]: rust-lang/rust#83909 (comment)

Author: bors