Revert "term: append zero-width grapheme breaking characters to previous cell"

This reverts commit 76503fb86a.

CHANGELOG.md

@@ -229,9 +229,9 @@
   enabled ([#1947][1947]).
 * Reflow of the cursor (active + saved) when at the end of the line
   with a pending wrap (LCF set) ([#1954][1954]).
-* Zero-width characters that also are grapheme breaks (e.g. U+200B,
+* ~~Zero-width characters that also are grapheme breaks (e.g. U+200B,
   ZERO WIDTH SPACE) being ignored (discarded and never stored in the
-  grid) ([#1960][1960]).
+  grid) ([#1960][1960]).~~ (reverted)
 * `--server=<FD>` not working on FreeBSD ([#1956][1956]).
 * Crash when resetting the terminal and an application had previously
   set a custom app ID ([#1963][1963])

terminal.c

@@ -4188,7 +4188,7 @@ term_process_and_print_non_ascii(struct terminal *term, char32_t wc)
         if (grapheme_clustering) {
             /* Check if we're on a grapheme cluster break */
             if (utf8proc_grapheme_break_stateful(
-                    last, wc, &term->vt.grapheme_state) && width > 0)
+                    last, wc, &term->vt.grapheme_state))
             {
                 term_reset_grapheme_state(term);
                 goto out;