tdf#93041: Resolve clashing SID_OFFER_IMPORT vs. SID_ATTR_CHAR_BACK_COLOR

...introduced with c1b9d61b "tdf#88276: Add slot
and handlers for toolbar|sidebar buttons"

Change-Id: Ic63a7766b7f0ccae9144a0ef276e2df63fc22f2e
(cherry picked from commit 4275056a)
Reviewed-on: https://gerrit.libreoffice.org/17508Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Miklos Vajna <vmiklos@collabora.co.uk>

include/editeng/editids.hrc

@@ -119,7 +119,7 @@
 #define SID_ATTR_CHAR_LATIN_POSTURE                     ( SID_SVX_START + 997 )
 #define SID_ATTR_CHAR_LATIN_WEIGHT                      ( SID_SVX_START + 998 )
 #define SID_ATTR_CHAR_GRABBAG                           ( SID_SVX_START + 1142 )
-#define SID_ATTR_CHAR_BACK_COLOR                        ( SID_SVX_START + 1143 )
+#define SID_ATTR_CHAR_BACK_COLOR                        ( SID_SVX_START + 1153 )
 
 // these ID didn't exist prior to the svx split, add new ids here
 #define SID_ATTR_CHAR_OVERLINE                          ( SID_EDIT_START + 68 )

include/svx/svxids.hrc

@@ -1010,6 +1010,8 @@
 
 #define SID_EDIT_POSTIT                                 ( SID_SVX_START + 1148 )
 
+// 1153 is used by editeng (SID_ATTR_CHAR_BACK_COLOR)
+
 // IMPORTANT NOTE: adjust SID_SVX_FIRSTFREE, when adding new slot id
 #define SID_SVX_FIRSTFREE                               (SID_EDIT_POSTIT + 1)