Reset verification on major metadata changes

[mayasimi]

Resolves #249
Summary

• define major metadata fields as name, website, and metadata CID
• reset verified projects to Unverified when a major metadata field changes
• emit a VERIFY/RESET event with the changed major fields
• keep minor metadata updates verified while preserving existing frozen-field rejection for slug/category/logo
• include current upstream CI fixes for fee event calls, maintainer hydration, rating property-test precondition, and formatting

Tests

• cargo fmt --check
• cargo test -p dongle-contract verified_freeze
• cargo test -p dongle-contract
• cargo clippy -p dongle-contract --target wasm32-unknown-unknown -- -D warnings

[drips-wave]

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