Instead of using a single variable for all transient states' full-hint
toggle functions, define a unique variable for each toggle function so that
toggling the full hint for one transient state does not affect the others.
* CHANGELOG.develop: Add an entry for this change.
* layers/+spacemacs/spacemacs-defaults/keybindings.el
(spacemacs--window-manipulation-ts-full-hint-toggle): New variable.
(spacemacs//window-manipulation-ts-toggle-hint)
(spacemacs//window-manipulation-ts-hint): Replace
spacemacs--ts-full-hint-toggle with
spacemacs--window-manipulation-ts-full-hint-toggle.
* layers/+spacemacs/spacemacs-layouts/config.el
(spacemacs--ts-full-hint-toggle): Delete variable.
(spacemacs--layouts-ts-full-hint-toggle)
(spacemacs--workspaces-ts-full-hint-toggle): New variables.
* layers/+spacemacs/spacemacs-layouts/funcs.el
(spacemacs//layouts-ts-toggle-hint, spacemacs//layouts-ts-hint): Replace
spacemacs--ts-full-hint-toggle with spacemacs--layouts-ts-full-hint-toggle.
(spacemacs//workspaces-ts-toggle-hint, spacemacs//workspaces-ts-hint):
Replace spacemacs--ts-full-hint-toggle with
spacemacs--workspaces-ts-full-hint-toggle.