perf: avoid `Unicode.Scalar.Properties`

[kkebo]

The following computed properties call computed properties of Unicode.Scalar.Properties.

• https://github.com/apple/swift/blob/98e65d015979c7b5a58a6ecf2d8598a6f7c85794/stdlib/public/core/CharacterProperties.swift#L27
• https://github.com/apple/swift/blob/98e65d015979c7b5a58a6ecf2d8598a6f7c85794/stdlib/public/core/CharacterProperties.swift#L117
• https://github.com/apple/swift/blob/98e65d015979c7b5a58a6ecf2d8598a6f7c85794/stdlib/public/core/CharacterProperties.swift#L149
• https://github.com/apple/swift/blob/98e65d015979c7b5a58a6ecf2d8598a6f7c85794/stdlib/public/core/CharacterProperties.swift#L199
• https://github.com/apple/swift/blob/98e65d015979c7b5a58a6ecf2d8598a6f7c85794/stdlib/public/core/CharacterProperties.swift#L252

However, those computed properties call a computed property _binaryProperties, and it calls _swift_stdlib_getBinaryProperties. It contains unneeded code for an HTML tokenizer.

https://github.com/apple/swift/blob/98e65d015979c7b5a58a6ecf2d8598a6f7c85794/stdlib/public/stubs/Unicode/UnicodeScalarProps.cpp#L32

So I decided to avoid Unicode.Scalar.Properties.