chore(cli): exclude lockfiles from embedded samples; remove lockfiles from sources

[akapug]

This PR addresses #1582 by removing and preventing lockfiles in embedded sample templates.

Changes:

• Remove package-lock.kdl from ktweb and web-static-worker sample sources
• Update packages/cli/src/projects/samples.json to stop referencing the lockfile
• Harden sample packing in packages/cli/build.gradle.kts to exclude common ecosystem lockfiles (npm/yarn/pnpm, Cargo, Pip, Poetry, Bundler, and Gradle dependency locks)

Why:

• Lockfiles in cross-platform samples can cause breakage/encoding issues and stale pins. Samples should resolve fresh on first install.

Verification:

• Ran :packages:cli:packSamples and inspected packages/cli/build/packed-samples/*.zip — no lockfiles included (e.g., web-static-worker.zip contains no lockfile)
• ktweb.zip now only includes elide.pkl as expected (no lockfile)

Follow-up:

• New projects created via elide init for web samples should no longer contain lockfiles.

Fixes #1582

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 39.98%. Comparing base (5a2cc4e) to head (0b1dbf3).
⚠️ Report is 128 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1634   +/-   ##
=======================================
  Coverage   39.98%   39.98%           
=======================================
  Files         783      783           
  Lines       37433    37433           
  Branches     5295     5295           
=======================================
  Hits        14969    14969           
  Misses      20675    20675           
  Partials     1789     1789           

Flag	Coverage Δ
jvm	39.98% <ø> (ø)
lib	39.98% <ø> (ø)

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see 1 file with indirect coverage changes

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