DEV: Extensively use `exception: true` in `system()` (#25911)

Specifically fixes a bug in smoke-test where it would just move on after failing to install latest js dependencies with yarn.

lib/tasks/annotate.rake

@@ -2,7 +2,7 @@
 
 desc "ensure the asynchronously-created post_search_data index is present"
 task "annotate" => :environment do |task, args|
-  raise if !system "bin/annotate --models"
+  system("bin/annotate --models", exception: true)
   STDERR.puts "Annotate executed successfully"
 
   non_core_plugins =
@@ -27,9 +27,12 @@ task "annotate:clean" => :environment do |task, args|
   db = TemporaryDb.new
   db.start
   db.with_env do
-    raise if !system "RAILS_ENV=test LOAD_PLUGINS=0 bin/rake db:migrate"
-    raise if !system "RAILS_ENV=test LOAD_PLUGINS=0 bin/rake annotate:ensure_all_indexes"
-    raise if !system "RAILS_ENV=test LOAD_PLUGINS=0 bin/annotate --models --model-dir app/models"
+    system("RAILS_ENV=test LOAD_PLUGINS=0 bin/rake db:migrate", exception: true)
+    system("RAILS_ENV=test LOAD_PLUGINS=0 bin/rake annotate:ensure_all_indexes", exception: true)
+    system(
+      "RAILS_ENV=test LOAD_PLUGINS=0 bin/annotate --models --model-dir app/models",
+      exception: true,
+    )
   end
   STDERR.puts "Annotate executed successfully"
 ensure

lib/tasks/db.rake

@@ -27,7 +27,10 @@ end
 
 task "db:environment:set" => [:load_config] do |_, args|
   if MultisiteTestHelpers.load_multisite?
-    system("RAILS_ENV=test RAILS_DB=discourse_test_multisite rake db:environment:set")
+    system(
+      "RAILS_ENV=test RAILS_DB=discourse_test_multisite rake db:environment:set",
+      exception: true,
+    )
   end
 end
 
@@ -56,7 +59,7 @@ end
 
 task "db:drop" => [:load_config] do |_, args|
   if MultisiteTestHelpers.create_multisite?
-    system("RAILS_DB=discourse_test_multisite RAILS_ENV=test rake db:drop")
+    system("RAILS_DB=discourse_test_multisite RAILS_ENV=test rake db:drop", exception: true)
   end
 end
 
@@ -266,7 +269,7 @@ task "db:migrate" => %w[
   end
 
   if !Discourse.is_parallel_test? && MultisiteTestHelpers.load_multisite?
-    system("RAILS_DB=discourse_test_multisite rake db:migrate")
+    system("RAILS_DB=discourse_test_multisite rake db:migrate", exception: true)
   end
 end
 

lib/tasks/javascript.rake

@@ -46,7 +46,7 @@ def write_template(path, task_name, template)
 
   File.write(output_path, "#{header}\n\n#{template}")
   puts "#{basename} created"
-  `yarn run prettier --write #{output_path}`
+  system("yarn run prettier --write #{output_path}", exception: true)
   puts "#{basename} prettified"
 end
 
@@ -59,7 +59,7 @@ def write_hbs_template(path, task_name, template)
   basename = File.basename(path)
   output_path = "#{Rails.root}/app/assets/javascripts/#{path}"
   File.write(output_path, "#{header}\n#{template}")
-  `yarn run prettier --write #{output_path}`
+  system("yarn run prettier --write #{output_path}", exception: true)
   puts "#{basename} created"
 end
 
@@ -203,8 +203,7 @@ end
 task "javascript:update" => "clean_up" do
   require "uglifier"
 
-  yarn = system("yarn install")
-  abort('Unable to run "yarn install"') unless yarn
+  system("yarn install", exception: true)
 
   versions = {}
   start = Time.now

lib/tasks/qunit.rake

@@ -17,7 +17,7 @@ task "qunit:test", %i[timeout qunit_path filter] do |_, args|
 
   report_requests = ENV["REPORT_REQUESTS"] == "1"
 
-  system("yarn install")
+  system("yarn install", exception: true)
 
   # ensure we have this port available
   def port_available?(port)
@@ -108,7 +108,13 @@ task "qunit:test", %i[timeout qunit_path filter] do |_, args|
     if qunit_path
       # Bypass `ember test` - it only works properly for the `/tests` path.
       # We have to trigger a `build` manually so that JS is available for rails to serve.
-      system("yarn", "ember", "build", chdir: "#{Rails.root}/app/assets/javascripts/discourse")
+      system(
+        "yarn",
+        "ember",
+        "build",
+        chdir: "#{Rails.root}/app/assets/javascripts/discourse",
+        exception: true,
+      )
 
       env["THEME_TEST_PAGES"] = if ENV["THEME_IDS"]
         ENV["THEME_IDS"]

lib/tasks/smoke_test.rake

@@ -10,7 +10,7 @@ task "smoke:test" do
     abort err.message
   end
 
-  system("yarn install")
+  system("yarn install", exception: true)
 
   url = ENV["URL"]
   if !url

lib/tasks/svg_icons.rake

@@ -9,8 +9,7 @@ def library_src
 end
 
 task "svgicons:update" do
-  yarn = system("yarn install")
-  abort('Unable to run "yarn install"') unless yarn
+  system("yarn install", exception: true)
 
   dependencies = [{ source: "@fortawesome/fontawesome-free/sprites", destination: "fontawesome" }]
 

migrations/spec/import_spec.rb

@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 RSpec.describe "Migrations::Import" do
-  subject(:cli) { system "migrations/import" }
+  subject(:cli) { system("migrations/import", exception: true) }
 
   it "works" do
     expect { cli }.to output(