fix: check both dash-form and dot-form model IDs in getDefaultMaxTokens

[wasim-builds]

Summary

Fixes #432

in both the V2 and V3 language models only checked for dash-form model ID patterns (e.g., claude-3-7-sonnet), but normalizeModelId converts version dashes to dots (e.g., claude-3.7-sonnet). This caused normalized Anthropic model IDs to silently fall back to the 4096 default instead of their intended values:

Model	Expected	Actual (before fix)
anthropic/claude-3-7-sonnet	64000	64000
anthropic/claude-3.7-sonnet (normalized)	64000	4096
anthropic/claude-3-5-haiku	8192	8192
anthropic/claude-3.5-haiku (normalized)	8192	4096
anthropic/claude-haiku-4-5	64000	64000
anthropic/claude-haiku-4.5 (normalized)	64000	4096

Changes

• stripe-language-model.ts: Added dot-form pattern checks (claude-3.7-sonnet, claude-3.5-haiku, haiku-4.5) to getDefaultMaxTokens
• stripe-language-model-v3.ts: Same fix applied to the V3 implementation
• Tests: Added test cases for both normalized (dot-form) and dash-form model IDs in both V2 and V3 test suites

All 333 tests pass.

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