aitools: refresh skills install goldens for --global deprecation warning

#5234 added a deprecation message when --global is passed; regenerate
the affected aitools install goldens so the acceptance tests pass after
the merge from main.

Co-authored-by: Isaac

Author: jamesbroadhead

acceptance/experimental/aitools/skills/install-experimental-empty/output.txt

@@ -2,6 +2,7 @@
 === --experimental against a manifest with no experimental skills logs a nudge
 >>> [CLI] experimental aitools install --global --experimental
 Command "install" is deprecated, use "databricks aitools install" instead.
+Flag --global has been deprecated, use --scope=global
 Installing Databricks AI skills for Claude Code...
 Using skills version test-ref
 Warn: --experimental was set but the manifest at test-ref exposes no experimental skills. Set DATABRICKS_SKILLS_REF to a release that includes them (or =main for the latest).

acceptance/experimental/aitools/skills/install-specific/output.txt

@@ -2,20 +2,23 @@
 === install only one specific stable skill via --skills
 >>> [CLI] experimental aitools install --global --skills test-stable-a
 Command "install" is deprecated, use "databricks aitools install" instead.
+Flag --global has been deprecated, use --scope=global
 Installing Databricks AI skills for Claude Code...
 Using skills version test-ref
 Installed 1 skill.
 
 === install a specific experimental skill
 >>> [CLI] experimental aitools install --global --skills test-exp --experimental
 Command "install" is deprecated, use "databricks aitools install" instead.
+Flag --global has been deprecated, use --scope=global
 Installing Databricks AI skills for Claude Code...
 Using skills version test-ref
 Installed 1 skill.
 
 === asking for an experimental skill without --experimental flag errors out
 >>> [CLI] experimental aitools install --global --skills test-exp
 Command "install" is deprecated, use "databricks aitools install" instead.
+Flag --global has been deprecated, use --scope=global
 Installing Databricks AI skills for Claude Code...
 Using skills version test-ref
 Error: skill "test-exp" is experimental; use --experimental to install

acceptance/experimental/aitools/skills/install/output.txt

@@ -2,20 +2,23 @@
 === stable-only install (no --experimental flag) installs 1 skill
 >>> [CLI] experimental aitools install --global
 Command "install" is deprecated, use "databricks aitools install" instead.
+Flag --global has been deprecated, use --scope=global
 Installing Databricks AI skills for Claude Code...
 Using skills version test-ref
 Installed 1 skill.
 
 === re-run with --experimental installs the experimental one too
 >>> [CLI] experimental aitools install --global --experimental
 Command "install" is deprecated, use "databricks aitools install" instead.
+Flag --global has been deprecated, use --scope=global
 Installing Databricks AI skills for Claude Code...
 Using skills version test-ref
 Installed 2 skills.
 
 === no-op re-run is idempotent (no new fetches, no errors)
 >>> [CLI] experimental aitools install --global --experimental
 Command "install" is deprecated, use "databricks aitools install" instead.
+Flag --global has been deprecated, use --scope=global
 Installing Databricks AI skills for Claude Code...
 Using skills version test-ref
 Installed 2 skills.