patch 8.2.0231: silent system command may clear the screen

Problem:    Silent system command may clear the screen.
Solution:   Do not clear the screen in t_te.
diff --git a/src/term.c b/src/term.c
index 1399286..b942b0f 100644
--- a/src/term.c
+++ b/src/term.c
@@ -909,8 +909,8 @@
     {(int)KS_KE,	IF_EB("\033[?1l\033>", ESC_STR "[?1l" ESC_STR_nc ">")},
 #  ifdef FEAT_XTERM_SAVE
     {(int)KS_TI,	IF_EB("\0337\033[?47h", ESC_STR "7" ESC_STR_nc "[?47h")},
-    {(int)KS_TE,	IF_EB("\033[2J\033[?47l\0338",
-				  ESC_STR "[2J" ESC_STR_nc "[?47l" ESC_STR_nc "8")},
+    {(int)KS_TE,	IF_EB("\033[?47l\0338",
+					   ESC_STR_nc "[?47l" ESC_STR_nc "8")},
 #  endif
     {(int)KS_CTI,	IF_EB("\033[>4;2m", ESC_STR_nc "[>4;2m")},
     {(int)KS_CTE,	IF_EB("\033[>4;m", ESC_STR_nc "[>4;m")},
diff --git a/src/version.c b/src/version.c
index 8bd7d10..db1f9f7 100644
--- a/src/version.c
+++ b/src/version.c
@@ -743,6 +743,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    231,
+/**/
     230,
 /**/
     229,