Remove retired Claude Haiku 3 model

[Shulyaka]

Proposed change

Remove support for Claude Haiku 3 which has been retired today.

Type of change

• Dependency upgrade
• Bugfix (non-breaking change which fixes an issue)
• New integration (thank you!)
• New feature (which adds functionality to an existing integration)
• Deprecation (breaking change to happen in the future)
• Breaking change (fix/feature causing existing functionality to break)
• Code quality improvements to existing code or addition of tests

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[Copilot]

Pull request overview

Removes references to the retired Claude Haiku 3 model from the Anthropic integration test fixtures/snapshots and adjusts model aliasing/config-flow behavior accordingly.

Changes:

• Remove “Claude Haiku 3” from the mocked model list and the config-flow model-list snapshot.
• Update Anthropic tests to use current model IDs/defaults (e.g., Haiku 4.5 / Opus 4).
• Simplify model_alias() handling and remove per-model web/code-execution “unsupported” lists.

Reviewed changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
tests/components/anthropic/test_init.py	Updates deprecated-model repair test to use a newer model ID.
tests/components/anthropic/test_config_flow.py	Updates expected options/model IDs for current defaults.
tests/components/anthropic/snapshots/test_config_flow.ambr	Removes “Claude Haiku 3” from the model picker snapshot.
tests/components/anthropic/init.py	Removes Haiku 3 from the mocked Anthropic model_list.
homeassistant/components/anthropic/coordinator.py	Adjusts model alias resolution logic.
homeassistant/components/anthropic/const.py	Removes model-specific unsupported lists; narrows tool-search unsupported prefixes.
homeassistant/components/anthropic/config_flow.py	Removes gating based on unsupported model lists; always exposes web/code execution toggles.

[Copilot]

Make model_alias only strip a trailing date suffix (e.g., -YYYYMMDD) so it stays idempotent for already-short model IDs. With the current model_id[-2:-1] != "-" check, a short ID like claude-3-7-sonnet (which can result from stripping claude-3-7-sonnet-20250219) gets truncated to claude, breaking alias matching in get_model_info and any UI that round-trips these values.