Changes to correctly propagate errors in IVOA TAP queries

The queryMap object was not correctly propagating the status and results for a query that returned a message containing an "ERROR". This change contains a fix to correctly identify this, and propagate it correctly.

assigned to @swinbank

assigned to @kliffen and unassigned @swinbank

requested review from @kliffen

assigned to @Voutsinas

assigned to @swinbank

approved this merge request

mentioned in commit 114b9aef

merged