Multi-line check constraints incorrectly have commas after each line when reordering structure files

[aristocrates]

Multi-line check constraints incorrectly have commas after each line when reordering structure files.

Example:

SCHEMA_FILENAME = 'table_schema_for_repro.sql'

PgColumnBytePacker::PgDump.sort_columns_for_definition_file(
  SCHEMA_FILENAME,
  connection: ActiveRecord::Base.connection,
)

CREATE TABLE public.bug_repro_values (
    id bigint NOT NULL,
    condition_category text NOT NULL,
    condition_value integer NOT NULL
    CONSTRAINT contrived_condition_check CHECK (
CASE
    WHEN (condition_category = 'must_be_positive') THEN (condition_value > 0)
    WHEN (condition_category = 'must_be_negative') THEN (condition_value < 0)
    ELSE true
END)
);

The following diff occurs, which correctly reorders condition_value integer and condition_category text, but incorrectly adds commas to the end of all the check constraint lines:

--- table_schema_for_repro.sql	2023-08-31 04:44:55.438589724 +0000
+++ table_schema_for_repro_copy.sql	2023-08-31 04:53:12.714570483 +0000
@@ -1,11 +1,11 @@
 CREATE TABLE public.bug_repro_values (
     id bigint NOT NULL,
+    condition_value integer NOT NULL,
     condition_category text NOT NULL,
-    condition_value integer NOT NULL
-    CONSTRAINT contrived_condition_check CHECK (
-CASE
-    WHEN (condition_category = 'must_be_positive') THEN (condition_value > 0)
-    WHEN (condition_category = 'must_be_negative') THEN (condition_value < 0)
-    ELSE true
+    CONSTRAINT contrived_condition_check CHECK (,
+CASE,
+    WHEN (condition_category = 'must_be_positive') THEN (condition_value > 0),
+    WHEN (condition_category = 'must_be_negative') THEN (condition_value < 0),
+    ELSE true,
 END)
 );

Full repro Dockerfile and supporting files: https://github.com/aristocrates/pg_column_byte_packer_comma_bug_repro