[prism] Match Ripper's multilining logic for call chains beginning with literal expressions (#766)

Author: reese

fixtures/small/array_call_chain_with_block_comment_actual.rb

@@ -0,0 +1,10 @@
+[
+  CommonFields::OBVIOUSLY,
+  CommonFields::THESE,
+  CommonFields::ARE,
+  CommonFields::FAKE_RESOURCE.with_wombo(true).with_combo(true).with_explosion(true)
+]
+  .map do |field|
+  # Swap things out, to make sure.
+  override || field
+end

fixtures/small/array_call_chain_with_block_comment_expected.rb

@@ -0,0 +1,10 @@
+[
+  CommonFields::OBVIOUSLY,
+  CommonFields::THESE,
+  CommonFields::ARE,
+  CommonFields::FAKE_RESOURCE.with_wombo(true).with_combo(true).with_explosion(true)
+]
+  .map do |field|
+    # Swap things out, to make sure.
+    override || field
+  end

librubyfmt/src/format_prism.rs

@@ -2340,7 +2340,7 @@ fn call_chain_elements_are_user_multilined<'src>(
         // placement, the user probably intended to break this onto multiple lines anyways.
         let has_comment = ps.has_comment_in_offset_span(
             call_chain_elements[0].location().end_offset(),
-            start_loc_for_call_node_in_chain(&call_chain_elements[1].as_call_node().unwrap()),
+            call_chain_elements.last().unwrap().location().end_offset(),
         );
         if is_literal_expression && !has_comment {
             call_chain_elements = &call_chain_elements[1..];