aider-chat: skip version check in tests

aider checks for a new version and prompts for an install on each
launch. These prompts cause checks to fail on the package whenever a new
version of the application is released.

Skip those version checks and include some dependencies missing from the
dependency check.

pkgs/by-name/ai/aider-chat/package.nix

@@ -51,6 +51,7 @@ python3.pkgs.buildPythonApplication {
       numpy
       packaging
       pathspec
+      pexpect
       pillow
       playwright
       prompt-toolkit
@@ -93,6 +94,8 @@ python3.pkgs.buildPythonApplication {
       "test_browser_flag_imports_streamlit"
       # AttributeError
       "test_simple_send_with_retries"
+      # Expected 'check_version' to have been called once
+      "test_main_exit_calls_version_check"
     ]
     ++ lib.optionals stdenv.hostPlatform.isDarwin [
       # Tests fails on darwin
@@ -102,6 +105,7 @@ python3.pkgs.buildPythonApplication {
 
   preCheck = ''
     export HOME=$(mktemp -d)
+    export AIDER_CHECK_UPDATE=false
   '';
 
   meta = {