Eglot: pay better attention to hints' paddingLeft/Right (bug#61924)

* lisp/progmodes/eglot.el (eglot--update-hints-1): Consider
:json-false, which is a non-nil value.

lisp/icomplete.el

@@ -661,6 +661,7 @@ Usually run by inclusion in `minibuffer-setup-hook'."
   (setq-local icomplete-hide-common-prefix nil
               ;; Ask `icomplete-completions' to return enough completions candidates.
               icomplete-prospects-height 25
+              truncate-lines t
               redisplay-adhoc-scroll-in-resize-mini-windows nil))
 
 ;;;###autoload

lisp/progmodes/eglot.el

@@ -3603,8 +3603,10 @@ If NOERROR, return predicate, else erroring function."
             (goto-char (eglot--lsp-position-to-point position))
             (when (or (> (point) to) (< (point) from)) (cl-return))
             (let ((left-pad (and paddingLeft
+                                 (not (eq paddingLeft :json-false))
                                  (not (memq (char-before) '(32 9))) " "))
                   (right-pad (and paddingRight
+                                  (not (eq paddingRight :json-false))
                                   (not (memq (char-after) '(32 9))) " ")))
               (cl-flet
                   ((do-it (text lpad rpad)