[BUG] results from org-prepare-dblock make clocktable unusable

[Mark A. Hershberger]

Buffer contains:

> #+BEGIN: clocktable :match tag
> #+END:

Hiting C-c C-c with point on #+BEGIN results in “Invalid match tag: tag”.

This is from the first line of code in org-tags-expand:
    (unless (org-string-nw-p match) (error "Invalid match tag: %S" match))

Tracking this down, the problem seems too be that org-prepare-dblock
produces a list of params that is the following:

    (:name "clocktable" :match tag)

Emacs  : GNU Emacs 31.0.50 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.24.38, 
cairo version 1.16.0)
 of 2024-09-04
Package: Org mode version 9.7.10 (release_9.7.10 @ 
/home/mah/work/code/emacs-master/lisp/org/)

and running “/usr/bin/emacs -Q” on

Emacs  : GNU Emacs 29.4 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.24.38, 
cairo version 1.16.0)
 of 2024-07-22, modified by Debian
Package: Org mode version 9.6.15 (release_9.6.15 @ 
/usr/share/emacs/29.4/lisp/org/)

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