fix(core): decode URI template match values

[xianjianlf2]

Summary

• percent-decode values captured by UriTemplate.match()
• decode exploded list elements independently while retaining encoded commas as data
• preserve malformed percent-encoded values rather than throwing during matching

Tests

• added regression coverage for decoded path/query/exploded values and malformed encodings
• git diff --check
• Prettier
• direct TypeScript verification of the affected matcher

The package-level pnpm test command could not run in this environment because workspace dependency linking did not complete.

[changeset-bot]

🦋 Changeset detected

Latest commit: 546e347

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@modelcontextprotocol/core-internal	Patch

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commit: 546e347