Create schema and samples for non-400 write request errors

Seperately, can we have 2 separate examples so the user can delineate:
* per-line rejection (with something writtten).
* not per-rejection. Nothing written. Error message is NOT `partialWriteErrorWithRejectedPoints`. e.g. namespace errors

_Originally posted by @wiedld in https://github.com/influxdata/docs-v2/pull/5169#discussion_r1355276604_

Start by reviewing the discussion in PR #5169 that originated this issue and locate the existing schema and write-request error documentation. Add separate examples for per-line rejection with something written and non-per-line rejection with nothing written, including a namespace error that is not `partialWriteErrorWithRejectedPoints`; done means both cases are clearly distinguishable.

Written by the indexing model from the issue text.