fix(workbench): recognize dated Seedance 2.0 models

[Iams4kura]

Summary

• Fixes: Selecting the built-in doubao-seedance-2-0-260128 model makes both single and batch prompt generation skip the Seedance 2 template and independent image, video, and audio reference mapping.
• Root cause: isSeedance2Model accepts a version boundary only at the end of the identifier or before an alphabetic suffix, so it rejects the repository's standard six-digit release-date suffix after 2-0.

Regression evidence

• Before: npx --yes --package node@24.11.1 --call 'node --import tsx --test tests/videoPromptReferences.test.ts' exited 1

• After: npx --yes --package node@24.11.1 --call 'node --import tsx --test tests/videoPromptReferences.test.ts' exited 0

Verification

• npx --yes --package node@24.11.1 --call 'node --import tsx --test tests/*.test.ts'
• npx --yes --package node@24.11.1 --package yarn@1.22.22 --call 'yarn lint'
• npx --yes --package node@24.11.1 --package yarn@1.22.22 --call 'yarn build'
• git diff --cached --check

Scope

• 2 files changed, +26 / -1 lines

[HBAI-Ltd]

please remove the test file