[native_assets_builder] Make hook environment configurable - fix

[dcharkes]

The health workflow is disabled currently, and #1853 accidentally hid too many public types.

[github-actions]

Package publishing

Package	Version	Status	Publish tag (post-merge)
package:native_assets_builder	0.10.2	ready to publish	native_assets_builder-v0.10.2
package:ffi	2.1.3	already published at pub.dev
package:ffigen	16.0.1-wip	WIP (no publish necessary)
package:jni	0.13.0	already published at pub.dev
package:jnigen	0.13.0	already published at pub.dev
package:native_assets_cli	0.10.0	already published at pub.dev
package:native_toolchain_c	0.7.0	already published at pub.dev
package:objective_c	4.0.1-wip	WIP (no publish necessary)
package:swift2objc	0.0.1-wip	WIP (no publish necessary)
package:swiftgen	0.0.1-wip	WIP (no publish necessary)

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

[github-actions]

PR Health

Breaking changes ✔️

Package	Change	Current Version	New Version	Needed Version	Looking good?
native_assets_builder	None	0.10.1	0.10.2	0.10.1	✔️

Changelog Entry ✔️

Package	Changed Files

Changes to files need to be accounted for in their respective changelogs.

API leaks ✔️

The following packages contain symbols visible in the public API, but not exported by the library. Export these symbols or remove them from your publicly visible API.

Package	Leaked API symbols

License Headers ✔️

// Copyright (c) 2025, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

Files
no missing headers

All source files should start with a license header.

Unrelated files missing license headers

Files
pkgs/jni/lib/src/third_party/generated_bindings.dart
pkgs/native_assets_builder/test_data/native_dynamic_linking/bin/native_dynamic_linking.dart
pkgs/objective_c/lib/src/ns_input_stream.dart

[coveralls]

coverage: 87.527%. remained the same
when pulling 556429e on fix-imports
into 2251646 on main.