chore(shorebird_cli): improve patch output when release uses non-default flutter version

[bryanoltman]

Description

When patching a release that uses a version of Flutter older than the default, we show the message:

The release you are trying to patch was built with a different version of Flutter.

Release Flutter Revision: 03e895ee09dfbb9c18681d103f4b27671ff65429
Current Flutter Revision: 47571af6a3acdebedf88255099ff1de1c3324049

It looks like an error, but it's not. This has confused several users.

This PR changes the message to simply say Release was built with Flutter revision 03e895ee09dfbb9c18681d103f4b27671ff65429.

Fixes #1930

Type of Change

• ✨ New feature (non-breaking change which adds functionality)
• 🛠️ Bug fix (non-breaking change which fixes an issue)
• ❌ Breaking change (fix or feature that would cause existing functionality to change)
• 🧹 Code refactor
• ✅ Build configuration change
• 📝 Documentation
• 🗑️ Chore

[eseidel]

I think we also added a later message explaining what version of flutter we're using to patch with, so this might even just be redundant. regardless, lgtm.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (3bd3f64) to head (d51ecbf).

Additional details and impacted files

@@            Coverage Diff            @@
##              main     #1932   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          174       174           
  Lines         5495      5493    -2     
=========================================
- Hits          5495      5493    -2     

Flag	Coverage Δ
shorebird_cli	100.00% <100.00%> (ø)

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