fix test_internal being stuck on test_wrap_text_wide_chars (fix _handle_long_word)

Author: astanin

tabulate/__init__.py

@@ -2775,7 +2775,8 @@ def _handle_long_word(self, reversed_chunks, cur_line, cur_len, width):
             chunk = reversed_chunks[-1]
             i = 1
             # Only count printable characters, so strip_ansi first, index later.
-            while len(_strip_ansi(chunk)[:i]) <= space_left:
+            stripped_chunk = _strip_ansi(chunk)
+            while i <= len(stripped_chunk) and self._len(stripped_chunk[:i]) <= space_left:
                 i = i + 1
             # Consider escape codes when breaking words up
             total_escape_len = 0