Backports for 1.10.4

[KristofferC]

Backported PRs:

• [x] #54010
• [x] #54143
• [x] #54151
• [x] #54233
• [x] #54251
• [x] #54363

Need manual backport:

• [ ] #52505
• [ ] #53373
• [ ] #53984
• [ ] #54276

Contains multiple commits, manual intervention needed:

• [ ] #53218
• [ ] #53833
• [ ] #54303

Non-merged PRs with backport label:

• [ ] #53882
• [ ] #53452
• [ ] #52694
• [ ] #51479

[IanButterworth]

To get the heapsnapshot fixes in I think these are all needed

• https://github.com/JuliaLang/julia/pull/52618
• https://github.com/JuliaLang/julia/pull/52854
• https://github.com/JuliaLang/julia/pull/53833
• https://github.com/JuliaLang/julia/pull/53984

Which I tried but they're not very clean backports. I think someone familiar with GC would be better suited to handle them.

[fingolfin]

It would be great to also get #53815 into 1.10.4. It requires (IMHO straightforward) manual resolution of the merge but it is easy enough, I can provide a PR if needed.

[KristofferC]

@N5N3, could you help backport the type intersection PRs that are marked for backport to here (some merge conflicts).

[N5N3]

@KristofferC, done. BTW, it would be good to backport #53675 and #54545 to 1.10, if the latter get merged. The free TypeVar regression shown in #54516 still exists.

[KristofferC]

@nanosoldier runtests()

[nanosoldier]

The package evaluation job you requested has completed - possible new issues were detected. The full report is available.

[fingolfin]

It seems #53815 did not make it in :-(. Any particular reason for that? It fixed a crash I can't otherwise work around

[KristofferC]

https://github.com/JuliaLang/julia/pull/54632

[sumiya11]

Thank you for fixing #54356 so quickly and for porting it to 1.10.4! I just tested 1.10.4 and the issue seems to be resolved.