…hirAccount to FhirServiceHostName

for all client sdk languages, not just autorest.

SDK configuration pull request

Purpose of this PR

• Make changes to the SDK configuration only when there are no modifications to the API specification, eliminating the need for an ARM or Stewardship Board API review.

Due diligence checklist

To merge this PR, you must go through the following checklist and confirm you understood
and followed the instructions by checking all the boxes:

• I confirm this PR is modifying only SDK configurations, and not API related specifications.
• I have reviewed and used the respective tspconfig.yaml templates:
  • ARM tspconfig template
  • Data plane tspconfig template

Getting help

• First, carefully read through this PR description, from top to bottom. Fill out the Purpose of this PR and Due diligence checklist.
• If you don't have permissions to remove or add labels to the PR, request write access per aka.ms/azsdk/access#request-access-to-rest-api-or-sdk-repositories
• To understand what you must do next to merge this PR, see the Next Steps to Merge comment. It will appear within few minutes of submitting this PR and will continue to be up-to-date with current PR state.
• For guidance on fixing this PR CI check failures, see the hyperlinks provided in given failure and https://aka.ms/ci-fix.
• If the PR CI checks appear to be stuck in queued state, please add a comment with contents /azp run.
  This should result in a new comment denoting a PR validation pipeline has started and the checks should be updated after few minutes.
• If the help provided by the previous points is not enough, post to https://aka.ms/azsdk/support/specreview-channel and link to this PR.