Auto merge of #25451 - kunalmohan:19308-AccountableRefCell, r=jdm

Add accountable-refcell as optional build time feature

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It can be used with the format `./mach build --features refcell_backtrace`.

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- [X] `./mach build -d` does not report any errors
- [X] `./mach test-tidy` does not report any errors
- [X] These changes fix #19308  (GitHub issue number if applicable)

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- [X] These changes do not require tests because it adds a optional build-time feature only.

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