[ffigen] Replace pub run with dart run

[sigurdm]

Following up on dart-lang/pub#4737, this PR replaces deprecated pub run commands with dart run.

[github-actions]

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// Copyright (c) 2026, 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.

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pkgs/hooks_runner/test_data/download_assets/hook/build.dart
pkgs/jni/test/debug_release_test.dart
pkgs/objective_c/example/command_line/lib/main.dart
pkgs/objective_c/lib/src/ns_input_stream.dart

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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.

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Breaking changes ⚠️

Package	Change	Current Version	New Version	Needed Version	Looking good?
hooks	None	1.0.0	1.0.0	1.0.0	✔️
hooks_runner	None	1.0.1	1.0.2-wip	1.0.1	✔️
jni	Breaking	0.15.2	0.15.3-wip	0.16.0 Got "0.15.3-wip" expected >= "0.16.0" (breaking changes)	⚠️

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[coveralls]

coverage: 81.786%. remained the same
when pulling fda6687 on sigurdm:remove-pub-run
into d296579 on dart-lang:main.

[dcharkes]

@sigurdm I don't believe dart run works in a Flutter project with Flutter dependencies. IIRC the reason we have to do flutter pub run in some of these cases is because dart run will complain about there being flutter dependencies. This applies specifically for when you try to run one of your dev dependencies that in the package graph doesn't actually depend on a flutter package, but the way that the package resolution works is that it's resolved for the whole workspace, and in JIT we compile all code, including the dependencies that require a Flutter SDK.

The CI is green, but the updated docs wouldn't actually work for our users, at least not in JNIgen afaik. (FFIgen for ObjC got recently migrated to build hooks, so that should no longer be a Flutter SDK.)

FYI @liamappelbe

[dcharkes]

What is this? We're at version 19 or 20 already? LLM gone mad?

[sigurdm]

Yes, this an llm gone mad! Sorry

[dcharkes]

We can just add the skip-changelog label instead.

[dcharkes]

@sigurdm You might want to search for "pub" and 'pub' in the repo as well to see if there aren't any Process.run invocations.