Merge pull request matplotlib#26010 from oscargus/napprox

Correct Unicode for [lg]napprox

Author: ksunden

doc/users/next_whats_new/mathtext_relation_operators.rst

@@ -0,0 +1,9 @@
+``mathtext`` operators
+----------------------
+
+There has been a number of operators added and corrected when a Unicode font is used.
+In addition, correct spacing has been added to a number of the previous operators.
+Especially, the characters used for ``\gnapprox``, ``\lnapprox``, ``\leftangle``, and
+``\rightangle`` have been corrected.
+
+All supported operators can be seen at :ref:`mathtext`.

lib/matplotlib/_mathtext_data.py

@@ -489,8 +489,8 @@
     'succnapprox'              : 0x2aba,
     'subsetneqq'               : 0x2acb,
     'supsetneqq'               : 0x2acc,
-    'lnapprox'                 : 0x2ab9,
-    'gnapprox'                 : 0x2aba,
+    'lnapprox'                 : 0x2a89,
+    'gnapprox'                 : 0x2a8a,
     'longleftarrow'            : 0x27f5,
     'longrightarrow'           : 0x27f6,
     'longleftrightarrow'       : 0x27f7,