[rubygems/rubygems] Ensure that Gem::Platform parses strings to a fix point

The issue was that the property that

```ruby
platform = Gem::Platform.new $string
platform == Gem::Platform.new(platform.to_s)
```

was not always true.

This property (of acchieving a fix point) is important,
since `Gem::Platform` gets serialized to a string and
then deserialized back to a `Gem::Platform` object.
If it doesn't deserialize to the same object, then
different platforms are used for the initial serialization
than subsequent runs.

I used https://github.com/segiddins/Scratch/blob/main/2025/03/rubygems-platform.rb
to find the failing cases and then fixed them.
With this patch, the prop check test now passes.

https://github.com/rubygems/rubygems/commit/313fb4bcec

0 files changed, 0 insertions, 0 deletions