[native_toolchain_c] Fix #3327 native_toolchain_c vswhere selection

[Chaos02]

Fixes Native_toolchain_c trying to use Microsoft SQL Server Management Studio as a msvc provider

Related Issues

Fixes #3327

PR Checklist

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[github-actions]

Package publishing

Package	Version	Status	Publish tag (post-merge)
package:code_assets	1.0.0	already published at pub.dev
package:data_assets	0.19.6	already published at pub.dev
package:ffi	2.2.0	already published at pub.dev
package:hooks	1.0.3	already published at pub.dev
package:hooks_runner	1.2.1	already published at pub.dev
package:jni_flutter	1.0.1	already published at pub.dev
package:native_toolchain_c	0.18.1	ready to publish	native_toolchain_c-v0.18.1
package:record_use	0.6.1-wip	WIP (no publish necessary)
package:swift2objc	0.2.0-wip	WIP (no publish necessary)
package:swiftgen	0.1.2	already published at pub.dev

Documentation at https://github.com/dart-lang/ecosystem/wiki/Publishing-automation.

[github-actions]

PR Health

Changelog Entry ✔️

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Breaking changes ✔️

Package	Change	Current Version	New Version	Needed Version	Looking good?
native_toolchain_c	None	0.18.0	0.18.1	0.18.0	✔️

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API leaks ✔️

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