fix(ci): emit TypeScript declarations before npm publish

[dearlordylord]

Published tarballs of several @hcengineering/* packages (0.7.411+) are missing their .d.ts files, despite every package.json declaring "types": "types/index.d.ts" and listing "types/**/*" in "files".

Repro: npm pack @hcengineering/core@0.7.413 --dry-run --json
(no types/ entries in the file list)

Root cause

publish-npm.yml runs rush build, which is defined in common/config/rush/command-line.json as a phased command with "phases": ["_phase:build"]. _phase:build resolves to compile transpile src (an esbuild-only transpile → lib/). The .d.ts emit lives in a separate phase, _phase:validate (compile validate → tsc --emitDeclarationOnly → declarationDir: ./types), which the publish workflow never runs. Because types/ does not exist when safe-publish.js invokes npm publish, the types/**/* glob in each package's files field matches nothing and the tarball ships without declarations.

Why this didn't regress earlier

These packages used to live in the now-dormant hcengineering/huly.core repo. That repo's ci.yml explicitly ran rush validate before rush publish, so types/ was always present at publish time.

After migration into this monorepo, the publish pipeline was rewritten (PR #10542, then extracted to publish-npm.yml in PR #10580) and the validate step was not carried over. Versions 0.7.18–0.7.382 still shipped declarations because:

• 0.7.18–0.7.26 were published from huly.core (validate present).
• 0.7.382 was published manually (likely) from a developer machine (_nodeVersion: 22.13.0, _npmVersion: 11.0.0 in npm metadata - doesn't match the CI runner). types/ happened to be left on disk from prior local development.
• 0.7.411+ are (likely) the first versions published via publish-npm.yml on a fresh runner (_nodeVersion: 22.22.2, _npmVersion: 10.9.7, consistent with actions/setup-node@v6 resolving .nvmrc: v22).

Fix

Add a rush validate step between build and publish in publish-npm.yml.

Affected packages observed on npm (0.7.411+):
@hcengineering/core
@hcengineering/account-client
@hcengineering/api-client
@hcengineering/text
@hcengineering/text-core
@hcengineering/text-html

Fixes #10767

[huly-github-staging]

Connected to Huly®: UBERF-16308