fix(typescript-fetch): prevent HTML-escaping of pattern in validationAttributes

[gurkodil]

Fixes issue where pattern in validationAttributes is HTML-escaped, resulting in invalid patterns like &.

cc:
@TiFu (2017/07) @taxpon (2017/07) @sebastianhaas (2017/07) @kenisteward (2017/07) @Vrolijkx (2017/09) @macjohnny (2018/01) @topce (2018/10) @akehir (2019/07) @petejohansonxo (2019/11) @amakhrov (2020/02) @davidgamero (2022/03) @mkusaka (2022/04) @joscha (2024/10) @dennisameling (2026/02)

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Summary by cubic

Fixes HTML-escaping of regex patterns in validationAttributes for the typescript-fetch generator. Generated pattern values now keep characters like & intact (e.g., '/^[a-z&]+$/').

• Bug Fixes
  • Render pattern with {{{pattern}}} in validationAttributes.mustache to avoid HTML-escaping.
  • Add test to confirm raw pattern output (not &), and update test spec/samples with nickname using pattern '/^[a-z&]+$/'.

^{Written for commit 9dbde5b. Summary will update on new commits.}

[cubic-dev-ai]

No issues found across 5 files