Always insert newline before closing parenthesis in expressions

Simplify the heredoc fix by unconditionally adding a newline before
the closing parenthesis instead of checking for heredoc patterns.
This is safe because Ruby ignores trailing newlines in expressions.

Update compiled snapshots to reflect the new output format.

Co-authored-by: Amp <amp@ampcode.com>
Amp-Thread-ID: https://ampcode.com/threads/T-019c7333-8beb-715a-9183-8434cd5fb15a

Author: pinzonjulian

lib/reactionview/template/handlers/herb/herb.rb

@@ -66,9 +66,7 @@ def add_rails_expression(indicator, code, wrap_parentheses:)
                       end
 
               if wrap_parentheses
-                @src << "(" << code
-                @src << "\n" if code.match?(/<<[~-]?\s*['"`]?\w/)
-                @src << ")"
+                @src << "(" << code << "\n)"
               else
                 @src << " " << code
               end

test/snapshots/herb/template_handler_test/test_0003_template_with_expression_compiled_40e3b949384b06dd58f462a17aa0827b.txt

@@ -1,2 +1,3 @@
- @output_buffer.safe_append='<h1>Hello '.freeze; @output_buffer.append=(@name); @output_buffer.safe_append='</h1>'.freeze;
+ @output_buffer.safe_append='<h1>Hello '.freeze; @output_buffer.append=(@name
+); @output_buffer.safe_append='</h1>'.freeze;
 @output_buffer

test/snapshots/herb/template_handler_test/test_0005_raw_and_regular_output_compiled_ce838ee50a8780e359b0426fe5b6bfb4.txt

@@ -1,2 +1,4 @@
- @output_buffer.append=(@html); @output_buffer.append=(raw @safe_html);
+ @output_buffer.append=(@html
+); @output_buffer.append=(raw @safe_html
+);
 @output_buffer

test/snapshots/herb/template_handler_test/test_0006_template_with_newlines_compiled_ca45577d00c738a24540dfeb3f7885ef.txt

@@ -1,4 +1,5 @@
  @output_buffer.safe_append='<div>
-'.freeze; @output_buffer.append=(@content); @output_buffer.safe_append='
+'.freeze; @output_buffer.append=(@content
+); @output_buffer.safe_append='
 </div>'.freeze;
 @output_buffer

test/snapshots/herb/template_handler_test/test_0007_multiple_expressions_compiled_082a93002fba858b87a75785cd88a2b7.txt

@@ -1,2 +1,4 @@
- @output_buffer.safe_append='<h1>Hello '.freeze; @output_buffer.append=(@name); @output_buffer.safe_append='!</h1><p>'.freeze; @output_buffer.append=(@message); @output_buffer.safe_append='</p>'.freeze;
+ @output_buffer.safe_append='<h1>Hello '.freeze; @output_buffer.append=(@name
+); @output_buffer.safe_append='!</h1><p>'.freeze; @output_buffer.append=(@message
+); @output_buffer.safe_append='</p>'.freeze;
 @output_buffer

test/snapshots/herb/template_handler_test/test_0008_xss_protection_compiled_8fc34c93947921e6cf438e5adfc691d7.txt

@@ -1,2 +1,3 @@
- @output_buffer.safe_append='<div>'.freeze; @output_buffer.append=(@unsafe_content); @output_buffer.safe_append='</div>'.freeze;
+ @output_buffer.safe_append='<div>'.freeze; @output_buffer.append=(@unsafe_content
+); @output_buffer.safe_append='</div>'.freeze;
 @output_buffer

test/snapshots/herb/template_handler_test/test_0009_content_tag_helper_compiled_9d7872dac3cef10a2a63f61404a4b051.txt

@@ -1,2 +1,3 @@
- @output_buffer.append=(content_tag :div, "Hello", class: "greeting");
+ @output_buffer.append=(content_tag :div, "Hello", class: "greeting"
+);
 @output_buffer

test/snapshots/herb/template_handler_test/test_0010_user_card_with_conditional_and_link_to_compiled_351531c91827e79a1a9ab2f324c18ce9.txt

@@ -1,5 +1,6 @@
  @output_buffer.safe_append='<div class="user-card">
-  <h2>'.freeze; @output_buffer.append=(@user[:name]); @output_buffer.safe_append='</h2>
+  <h2>'.freeze; @output_buffer.append=(@user[:name]
+); @output_buffer.safe_append='</h2>
 '.freeze;   if @user[:verified] 
  @output_buffer.safe_append='    <span class="badge">Verified</span>
 '.freeze;   end 

test/snapshots/herb/template_handler_test/test_0011_complex_layout_with_helpers_compiled_3a9949064612857244b6b8987a2b6dc3.txt

@@ -1,13 +1,16 @@
  @output_buffer.safe_append='<div class="container py-8">
-  <h1 class="title">'.freeze; @output_buffer.append=(title "Events by Country"); @output_buffer.safe_append='</h1>
+  <h1 class="title">'.freeze; @output_buffer.append=(title "Events by Country"
+); @output_buffer.safe_append='</h1>
 
-  '.freeze; @output_buffer.append=(ui_button "View all cities", url: cities_path, kind: :secondary); @output_buffer.safe_append='
+  '.freeze; @output_buffer.append=(ui_button "View all cities", url: cities_path, kind: :secondary
+); @output_buffer.safe_append='
 
 '.freeze;   if @show_countries 
  @output_buffer.safe_append='    <h2>Countries</h2>
     '.freeze; @output_buffer.append= link_to country_path("switzerland"), id: "country-ch", class: "event-item" do; @output_buffer.safe_append='
       <span class="event-name">🇨🇭 Switzerland</span>
-      '.freeze; @output_buffer.append=(ui_badge(5, kind: :secondary, class: "event-count")); @output_buffer.safe_append='
+      '.freeze; @output_buffer.append=(ui_badge(5, kind: :secondary, class: "event-count")
+); @output_buffer.safe_append='
 '.freeze;     end 
    end 
  @output_buffer.safe_append='</div>