fix(cli): correct --dry-run help text for bun publish (#25137)

## Summary
- Fix `bun publish --help` showing incorrect `--dry-run` description
("Don't install anything" → "Perform a dry run without making changes")
- The `--dry-run` flag is in a shared params array used by multiple
commands, so the new generic message works for all of them

Fixes #24806

## Test plan
- [x] Verify `bun publish --help` shows "Perform a dry run without
making changes" for --dry-run
- [x] Regression test added that validates the correct help text is
shown
- [x] Test passes with debug build, fails with system bun (validating it
tests the right thing)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

---------

Co-authored-by: Claude Bot <claude-bot@bun.sh>
Co-authored-by: Claude <noreply@anthropic.com>
Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>

test/regression/issue/24806.test.ts

@@ -0,0 +1,23 @@
+import { expect, test } from "bun:test";
+import { bunEnv, bunExe } from "harness";
+
+test("bun publish --help shows correct message for --dry-run", async () => {
+  await using proc = Bun.spawn({
+    cmd: [bunExe(), "publish", "--help"],
+    env: bunEnv,
+    stdout: "pipe",
+    stderr: "pipe",
+  });
+
+  const [stdout, stderr, exitCode] = await Promise.all([proc.stdout.text(), proc.stderr.text(), proc.exited]);
+
+  // The --dry-run flag should have a generic description that works for all commands
+  // It should NOT say "Don't install anything" when used with "bun publish"
+  expect(stdout).toContain("--dry-run");
+  expect(stdout).toContain("Perform a dry run without making changes");
+
+  // Make sure it doesn't contain the old incorrect message
+  expect(stdout).not.toContain("Don't install anything");
+
+  expect(exitCode).toBe(0);
+});