Restore emacs-29.1 eglot behaviour on master

[Pedro A. Aranda]

Hi

I've been having massive problems with eglot on master. I understand 
evolution, being on master, etc. but this is taking too much time now 
<sigh> and some LSP implementers understand but others don't even react...

I'm mainly working with Python and LaTeX and this is my eglot config:

  (setq-default eglot-workspace-configuration
                '(:pylsp
                  (:configurationSources ["pycodestyle"]
                   :plugins (:autopep8 (:enabled t)
                             :jedi_completion (:include_params t
                                               :eager t
                                               :fuzzy :json-false)
                             :flake8      (:enabled :json-false)
                             :pylint      (:enabled :json-false)
                             :pycodestyle (:enabled :json-false)
                             :pyflakes    (:enabled t)
                             :mccabe      (:enabled t ;; boolean: true 
(default) or false
                                           :threshold 45)))
                  :texlab
                  (:completion (:matcher "prefix"))))

What I have learnt:

On emacs-29, the section relating to the LSP that is used when on a 
specific buffer (and only that) is sent tp the LSP. And everything woks 
as expected

On emacs-30. the full configuration is sent. That confuses the LSP 
servers and they start working with the default configuration, which is 
sometimes of little help.

Could the original behaviour be (re)implemented in master, please

Thanks a ton in advance,

/Pedro A. Aranda