update last_activity when pty_read

[Wh1isper]

see: jupyter/terminado#136

This PR implements the update of last_activity on read, making last_activity more accurate

[codecov-commenter]

Codecov Report

Merging #680 (e5f139c) into main (745f5ba) will increase coverage by 0.00%.
The diff coverage is 100.00%.

❗ Current head e5f139c differs from pull request most recent head 35fa798. Consider uploading reports for the commit 35fa798 to get more accurate results

@@           Coverage Diff           @@
##             main     #680   +/-   ##
=======================================
  Coverage   77.97%   77.98%           
=======================================
  Files         115      115           
  Lines       10817    10819    +2     
  Branches     1465     1465           
=======================================
+ Hits         8435     8437    +2     
  Misses       1981     1981           
  Partials      401      401           

Impacted Files	Coverage Δ
jupyter_server/terminal/terminalmanager.py	89.02% <100.00%> (+0.27%)	⬆️

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[blink1073]

I love the idea, but perhaps this should go in https://github.com/jupyter-server/jupyter_server_terminals since we're removing the terminals logic from this repo in #651

[Wh1isper]

I love the idea, but perhaps this should go in https://github.com/jupyter-server/jupyter_server_terminals since we're removing the terminals logic from this repo in #651

Thanks, I created a PR in the new project

[Wh1isper]

close as it merged in jupyter_server_terminals