Have lsp! return non-nil if successful

And fix an issue where +javascript-init-lsp-or-tide-maybe-h would
reference lsp-mode in the rare case where lsp-mode isn't defined (likely
because the user forgot to run `doom refresh` after enabling the :tools
lsp module).

modules/tools/lsp/autoload.el

@@ -21,10 +21,10 @@ been moved out to their respective modules, or these hooks:
                     (lsp--try-project-root-workspaces
                      (equal arg '(4))
                      (and arg (not (equal arg 1)))))))
-      (lsp-mode 1)
-      (lsp--info
-       "Connected to %s."
-       (apply
-        #'concat (mapcar
-                  (lambda (it) (format "[%s]" (lsp--workspace-print it)))
-                  lsp--buffer-workspaces))))))
+      (prog1 (lsp-mode 1)
+        (lsp--info
+         "Connected to %s."
+         (apply
+          #'concat (mapcar
+                    (lambda (it) (format "[%s]" (lsp--workspace-print it)))
+                    lsp--buffer-workspaces)))))))