fix(vterm): enable remote shell tracking

On remote shell, `INSIDE_EMACS` is set to `vterm,tramp:<ver>`.

Doc: https://github.com/akermu/emacs-libvterm#directory-tracking-and-prompt-tracking.

Related issues: akermu/emacs-libvterm#369.

modules/zsh/site-plugins/vterm/vterm.plugin.zsh

@@ -1,4 +1,4 @@
-if [[ "$INSIDE_EMACS" != 'vterm' ]]; then return; fi
+if [[ "$INSIDE_EMACS" != vterm* ]]; then return; fi
 
 # Enable the shell to send information to vterm via properly escaped sequences
 vterm_printf() {