Update examples to use core.make_tmp_dir_server

[PProfizi]

make_tmp_dir_server has recently been fixed to actually create the folder if it does not already exist.

[codecov]

Codecov Report

Merging #936 (1835348) into master (8917810) will increase coverage by 0.39%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #936      +/-   ##
==========================================
+ Coverage   88.22%   88.61%   +0.39%     
==========================================
  Files          73       73              
  Lines        8356     8356              
==========================================
+ Hits         7372     7405      +33     
+ Misses        984      951      -33     

[germa89]

I think dpf.core.make_tmp_dir_server(dpf.SERVER) line is a bit redundant, since if you are on local you should not needed (part of the logic), and if you are on remote, you should create it automatically (if needed) and the file server path if you needed it it is returned when you uploaded.

In PyMAPDL CICD that line is required to initialize dpf.SERVER otherwise it is None. This makes this line redundant or not very useful. Please notice we rely on the legacy grpc server because we use a DPF docker image.
I will see if I can update it these days. Any advice is welcomed.