Drop job_errors view in bgw_job_stat_history migration

The 2.28.0--2.28.1 migration rebuilds bgw_job_stat_history to fix a
wrong id column type. It dropped the job_history view before rebuilding
the table but not the job_errors view, which also reads from that table.

On upgrade paths that start at or below 2.24.0 the views are not
detached first, so job_errors still depends on the table and the
DROP TABLE fails. The view must also be dropped so it can be recreated
with the corrected column types afterwards.

Fixes #10272

Author: svenklemm

sql/updates/2.28.0--2.28.1.sql

@@ -9,6 +9,7 @@ BEGIN
     -- START bgw_job_stat_history
     --
     DROP VIEW IF EXISTS timescaledb_information.job_history;
+    DROP VIEW IF EXISTS timescaledb_information.job_errors;
 
     CREATE TABLE _timescaledb_internal._tmp_bgw_job_stat_history AS SELECT * FROM _timescaledb_internal.bgw_job_stat_history;
     CREATE TABLE _timescaledb_internal._tmp_job_stat_history_id_seq AS SELECT last_value, is_called FROM _timescaledb_internal.bgw_job_stat_history_id_seq;