run zsh startup files (#144196) (#144210)

Co-authored-by: Daniel Imms <2193314+Tyriar@users.noreply.github.com>

src/vs/workbench/contrib/terminal/browser/media/shellIntegration.zsh

@@ -2,9 +2,19 @@
 #   Copyright (c) Microsoft Corporation. All rights reserved.
 #   Licensed under the MIT License. See License.txt in the project root for license information.
 # ---------------------------------------------------------------------------------------------
-
 autoload -Uz add-zsh-hook
 
+if [ -f ~/.zshenv ]; then
+	. ~/.zshenv
+fi
+if [[ -o "login" &&  -f ~/.zprofile ]]; then
+	. ~/.zprofile
+fi
+if [ -f ~/.zshrc ]; then
+	. ~/.zshrc
+fi
+unset ZDOTDIR # ensure ~/.zlogout runs as expected
+
 IN_COMMAND_EXECUTION="1"
 LAST_HISTORY_ID=0