Expand Document name parsing exception messages.

Also modify createAttributeNS-namespace-err.js and
createElementNS-namespace-err.js, our main tests of these cases, to
include exception messages in their output and rebaseline accordingly.

BUG=270033

Review URL: https://codereview.chromium.org/101043012

git-svn-id: svn://svn.chromium.org/blink/trunk@164303 bbb929c8-8fbe-4397-9dbb-9b2b20218538