…ow (#10949)

## What does this PR do?
Fixes #10772

Model IDs with cross-region inference would throw because we assumed
`modelID` would only have the `provider` and `model_name`, when it could
have the region as well. This would result in:

```
File /python3.11/site-packages/ddtrace/contrib/internal/botocore/services/bedrock.py:321, in patched_bedrock_api_call(original_func, instance, args, kwargs, function_vars)
    319 params = function_vars.get("params")
    320 pin = function_vars.get("pin")
--> 321 model_provider, model_name = params.get("modelId").split(".")
    322 integration = function_vars.get("integration")
    323 submit_to_llmobs = integration.llmobs_enabled and "embed" not in model_name

ValueError: too many values to unpack (expected 2)
```

We are not tagging that cross-region inference in this PR, just
resolving the error.

### Testing
To test this change, a singular `anthropic_message` test case and
corresponding cassette was modified. This had an unfortunate side effect
of affecting an LLMObs test as well. I can add a different test instead,
but I believe that would require an additional 60+ line cassette which
isn't totally needed, so I opted for this instead.

## Checklist
- [x] PR author has checked that all the criteria below are met
- The PR description includes an overview of the change
- The PR description articulates the motivation for the change
- The change includes tests OR the PR description describes a testing
strategy
- The PR description notes risks associated with the change, if any
- Newly-added code is easy to change
- The change follows the [library release note
guidelines](https://ddtrace.readthedocs.io/en/stable/releasenotes.html)
- The change includes or references documentation updates if necessary
- Backport labels are set (if
[applicable](https://ddtrace.readthedocs.io/en/latest/contributing.html#backporting))

## Reviewer Checklist
- [x] Reviewer has checked that all the criteria below are met
- Title is accurate
- All changes are related to the pull request's stated goal
- Avoids breaking
[API](https://ddtrace.readthedocs.io/en/stable/versioning.html#interfaces)
changes
- Testing strategy adequately addresses listed risks
- Newly-added code is easy to change
- Release note makes sense to a user of the library
- If necessary, author has acknowledged and discussed the performance
implications of this PR as reported in the benchmarks PR comment
- Backport labels are set in a manner that is consistent with the
[release branch maintenance
policy](https://ddtrace.readthedocs.io/en/latest/contributing.html#backporting)

(cherry picked from commit 80a3ee8)