[Internal] Fix databricks_users data source acceptance tests

[tanmay-db]

Fix SCIM filters in acceptance tests that never matched the created test users, causing the tests to silently return 0 results. Also fix test name prefixes so CI routes them to the correct environments.

Filter fixes:

• dataSourceTemplate: "userName co testuser" -> "userName co tf-{RANDOM}" to match created users tf-{RANDOM}-1@databricks.com
• dataSourceTemplateExtraAttributes: "userName eq me-{RANDOM}@example.com" -> "userName eq tf-{RANDOM}-1@databricks.com" to match created user

Prefix fixes (CI routing):

• TestAccDataSource* (AccountLevel) -> TestMwsAccDataSource* (account env)
• TestWorkspaceDataSource* (WorkspaceLevel) -> TestAccDataSource* (workspace env)

These tests were previously dead — wrong prefixes meant CI never selected them, and wrong filters meant they'd fail if they did run.

Co-authored-by: Isaac

Changes

Tests

• make test run locally
• relevant change in docs/ folder
• covered with integration tests in internal/acceptance
• using Go SDK
• using TF Plugin Framework
• has entry in NEXT_CHANGELOG.md file

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• PR number: 5531
• Commit SHA: 77b8ebbca7752e007928e1327f46616cb26f9bbe

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[github-actions]

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