[Flutter] Fix cross compiling from macOS to Windows

[erdemyerebasmaz]

Windows build is disabled temporarily as it's incompatible with macos-latest runner in it's current stage.

We're only interested in Dart/Flutter package being supported on Android & iOS platforms at this stage. MacOS, Linux, Windows, Web etc. is secondary. Feel free to address it, but it's a very low priority issue.

More info here: Cross compiling from macOS to Windows - Logs

Culprits:

• System version of Perl & OpenSSL incompatibility
• clang & ring v0.17.8 incompatibility

Related sources:

• how to build windows app from macos? tauri-apps/tauri#9650
• [Rust] Cross-compile linux and windows programs on mac (including Docker implementation)
  • (in Chinese)
• Error: failed to run custom build command for ring v0.17.7
• Wrong perl version? #9048
  • Script does not pick a different perl version but it still may be relevant, i.e.; A regression introduced on v5.34.x+