Frame title setting doesn't need to depend on environment (gui/cli)

Enables frame titles in gui emacsclient frames.

CHANGELOG.develop

@@ -616,6 +616,8 @@ Other:
     variable comments in favor of the ASCII one (thanks to nshadov)
   - Fixed home buffer version insertion removing first line (thanks to duianto)
   - Fixed ~SPC TAB~ in =spacemacs-base= distribution (thanks to duianto)
+  - Frame title setting doesn't need to depend on environment (gui/cli)
+    (thanks to Mpho Jele)
 - Other:
   - New function =configuration-layer/message= to display message in
     =*Messages*= buffer (thanks to Sylvain Benner)

core/core-spacemacs.el

@@ -103,7 +103,7 @@ the final step of executing code in `emacs-startup-hook'.")
                                     dotspacemacs-editing-style))
   (configuration-layer/initialize)
   ;; frame title init
-  (when (and (display-graphic-p) dotspacemacs-frame-title-format)
+  (when dotspacemacs-frame-title-format
     (require 'format-spec)
     (setq frame-title-format '((:eval (spacemacs/title-prepare dotspacemacs-frame-title-format))))
     (if dotspacemacs-icon-title-format