chore: SDK Truncation Logic

[JoshuaMoelans]

Fixes #1342

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Truncation occurrences (‼️ List is WIP):

🔍 sentry_unwind_stack(..., max_frames)

Code here. Need to investigate if this is something we should be truncating still, or if Relay can handle this.

🔍 inproc MAX_FRAMES

Code here and used for unwinding the stack here

Keep truncation

set_tag_n

We keep SDK-side truncation as span tags are soon to be deprecated (replaced by span attributes, which have way larger length limits (or possibly have no limited)).

code here and mention of truncation for sentry_span_set_tag here

removed in (commit) but seems like this is not truncated during ingestion... docs mention that tags must be less than 200 characters

Product doesn't seem to like these large values though 😅

[github-actions]

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