Fix reported license normalization bugs

[AgentGoose32]

Refs #1059

Summary

• Removes the 150-character early fallback so long license texts can still be recognized.
• Recognizes standard MIT license text using the canonical permission grant phrase.
• Preserves EDL-1.0 in compound license expressions instead of letting the fuzzy SPDX lookup misclassify it.
• Adds regression coverage for both examples from the issue.

Validation

• ruby -c app/models/package.rb
• ruby -c test/models/package_test.rb
• git diff --check

bundle exec ruby -Itest test/models/package_test.rb -n '/normalize_licenses (preserves EDL|recognizes long MIT)/' is blocked locally because this checkout requires Bundler 4.0.10 from Gemfile.lock, which is not available in the system Ruby environment.