fix(fabric): Alter table workaround

[fresioAS]

Fix for issue described in #5399 - ALTER TABLE ALTER COLUMN is not supported for Fabric Warehouse

1. Add new empty column
2. Copy data from old column to new column
3. Drop old column
4. Rename new column to old column name

[fresioAS]

@treysp @izeigerman @erindru
Any comments to this PR? Not ideal since it changes the order of the columns, but 100% better than crashing out with
Error:('42000', '[42000] [Microsoft][ODBC Driver 18 for SQL Server][SQL Server]The specified ALTER TABLE statement is not supported in this edition of SQL Server. (24585) (SQLExecDirectW)')

[mattiasthalen]

@georgesittas, can we get traction on this? It's causing some issues ☺️

[erindru]

Thanks @fresioAS !