[clang] [clang][analyzer] Add StreamChecker note tags for "indeterminate stream position". (PR #83288)

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https://github.com/NagyDonat approved this pull request.

The change looks reasonable, I only have minor remarks.

Re: your question about changing the warning message, I think that removing the single quotes around 'indeterminate' is probably a good idea, but the current message is also OK. 

https://github.com/llvm/llvm-project/pull/83288