Fix performance in fringe overlay placement

Multiple identical fringe overlays were being placed by overlays were being
added to the entire region for every interactive eval in that region.

Add check in cider-interactive-eval-handler, so only first value adds fringe
overlays. Remove all fringe overlays in region before placing new ones.

Addresses #1962

CHANGELOG.md

@@ -27,6 +27,7 @@
 
 ### Bugs Fixed
 
+* [#1962](https://github.com/clojure-emacs/cider/issues/1962): Fix performance in fringe overlay placement
 * [#1947](https://github.com/clojure-emacs/cider/issues/1947): Fix error on `cider-jack-in` when `enlighten-mode` is enabled.
 * [#1588](https://github.com/clojure-emacs/cider/issues/1588): Redirect `*err*`, `java.lang.System/out`, and `java.lang.System/err` to REPL buffer on all attached sessions.
 * [#1707](https://github.com/clojure-emacs/cider/issues/1707): Allow to customize line truncating in CIDER's special buffers.

cider-interaction.el

@@ -693,6 +693,7 @@ REPL buffer.  This is controlled via
                          (current-buffer))
     (save-excursion
       (goto-char beg)
+      (remove-overlays beg end 'cider-fringe-indicator)
       (condition-case nil
           (while (progn (clojure-forward-logical-sexp)
                         (and (<= (point) end)
@@ -709,11 +710,14 @@ or it can be a list with (START END) of the evaluated region."
          (beg (car-safe place))
          (end (or (car-safe (cdr-safe place)) place))
          (beg (when beg (copy-marker beg)))
-         (end (when end (copy-marker end))))
+         (end (when end (copy-marker end)))
+         (fringed nil))
     (nrepl-make-response-handler (or buffer eval-buffer)
                                  (lambda (_buffer value)
                                    (if beg
-                                       (cider--make-fringe-overlays-for-region beg end)
+                                       (unless fringed
+                                         (cider--make-fringe-overlays-for-region beg end)
+                                         (setq fringed t))
                                      (cider--make-fringe-overlay end))
                                    (cider--display-interactive-eval-result value end))
                                  (lambda (_buffer out)