Fix CI failures due to MySQL 8.0.19 no longer output integer display width...

Fix CI failures due to MySQL 8.0.19 no longer output integer display width unless ZEROFILL is also used

https://buildkite.com/rails/rails/builds/66475#7a6c54bc-4ed3-4676-b196-4fee031f43bf

Fixes #38226.

activerecord/test/cases/adapters/mysql2/mysql2_adapter_test.rb

@@ -77,11 +77,14 @@ def test_errors_for_bigint_fks_on_integer_pk_table_in_alter_table
       @conn.add_foreign_key :engines, :old_cars
     end
 
-    assert_includes error.message, <<~MSG.squish
-      Column `old_car_id` on table `engines` does not match column `id` on `old_cars`,
-      which has type `int(11)`. To resolve this issue, change the type of the `old_car_id`
-      column on `engines` to be :integer. (For example `t.integer :old_car_id`).
-    MSG
+    assert_match(
+      %r/Column `old_car_id` on table `engines` does not match column `id` on `old_cars`, which has type `int(\(11\))?`\./,
+      error.message
+    )
+    assert_match(
+      %r/To resolve this issue, change the type of the `old_car_id` column on `engines` to be :integer\. \(For example `t.integer :old_car_id`\)\./,
+      error.message
+    )
     assert_not_nil error.cause
   ensure
     @conn.execute("ALTER TABLE engines DROP COLUMN old_car_id") rescue nil
@@ -101,11 +104,14 @@ def test_errors_for_bigint_fks_on_integer_pk_table_in_create_table
       SQL
     end
 
-    assert_includes error.message, <<~MSG.squish
-      Column `old_car_id` on table `foos` does not match column `id` on `old_cars`,
-      which has type `int(11)`. To resolve this issue, change the type of the `old_car_id`
-      column on `foos` to be :integer. (For example `t.integer :old_car_id`).
-    MSG
+    assert_match(
+      %r/Column `old_car_id` on table `foos` does not match column `id` on `old_cars`, which has type `int(\(11\))?`\./,
+      error.message
+    )
+    assert_match(
+      %r/To resolve this issue, change the type of the `old_car_id` column on `foos` to be :integer\. \(For example `t.integer :old_car_id`\)\./,
+      error.message
+    )
     assert_not_nil error.cause
   ensure
     @conn.drop_table :foos, if_exists: true
@@ -125,11 +131,14 @@ def test_errors_for_integer_fks_on_bigint_pk_table_in_create_table
       SQL
     end
 
-    assert_includes error.message, <<~MSG.squish
-      Column `car_id` on table `foos` does not match column `id` on `cars`,
-      which has type `bigint(20)`. To resolve this issue, change the type of the `car_id`
-      column on `foos` to be :bigint. (For example `t.bigint :car_id`).
-    MSG
+    assert_match(
+      %r/Column `car_id` on table `foos` does not match column `id` on `cars`, which has type `bigint(\(20\))?`\./,
+      error.message
+    )
+    assert_match(
+      %r/To resolve this issue, change the type of the `car_id` column on `foos` to be :bigint\. \(For example `t.bigint :car_id`\)\./,
+      error.message
+    )
     assert_not_nil error.cause
   ensure
     @conn.drop_table :foos, if_exists: true

activerecord/test/cases/migration/change_schema_test.rb

@@ -144,10 +144,10 @@ def test_create_table_with_limits
           assert_equal "integer", four.sql_type
           assert_equal "bigint", eight.sql_type
         elsif current_adapter?(:Mysql2Adapter)
-          assert_match "int(11)", default.sql_type
-          assert_match "tinyint", one.sql_type
-          assert_match "int", four.sql_type
-          assert_match "bigint", eight.sql_type
+          assert_match %r/\Aint/, default.sql_type
+          assert_match %r/\Atinyint/, one.sql_type
+          assert_match %r/\Aint/, four.sql_type
+          assert_match %r/\Abigint/, eight.sql_type
         elsif current_adapter?(:OracleAdapter)
           assert_equal "NUMBER(38)", default.sql_type
           assert_equal "NUMBER(1)", one.sql_type