Fix T76646: Crash when changing Size in Add Cube pop-up in some cases.

Remove resetting of ID uuid session counter, it is not really needed
anymore, and not trivial to do this properly everytime.

Thanks @brecht for investigating this.

source/blender/blenkernel/BKE_lib_id.h

@@ -72,7 +72,6 @@ void BKE_libblock_init_empty(struct ID *id) ATTR_NONNULL(1);
 /* When an ID's uuid is of that value, it is unset/invalid (e.g. for runtime IDs, etc.). */
 #define MAIN_ID_SESSION_UUID_UNSET 0
 
-void BKE_lib_libblock_session_uuid_reset(void);
 void BKE_lib_libblock_session_uuid_ensure(struct ID *id);
 void BKE_lib_libblock_session_uuid_renew(struct ID *id);
 

source/blender/blenkernel/intern/lib_id.c

@@ -1063,12 +1063,6 @@ void BKE_libblock_init_empty(ID *id)
 /* ********** ID session-wise UUID management. ********** */
 static uint global_session_uuid = 0;
 
-/** Reset the session-wise uuid counter (used when reading a new file e.g.). */
-void BKE_lib_libblock_session_uuid_reset()
-{
-  global_session_uuid = 0;
-}
-
 /**
  * Generate a session-wise uuid for the given \a id.
  *

source/blender/windowmanager/intern/wm_files.c

@@ -617,9 +617,6 @@ bool WM_file_read(bContext *C, const char *filepath, ReportList *reports)
 
   UI_view2d_zoom_cache_reset();
 
-  /* Reset session-wise ID UUID counter. */
-  BKE_lib_libblock_session_uuid_reset();
-
   /* first try to append data from exotic file formats... */
   /* it throws error box when file doesn't exist and returns -1 */
   /* note; it should set some error message somewhere... (ton) */
@@ -926,9 +923,6 @@ void wm_homefile_read(bContext *C,
     }
   }
 
-  /* Reset session-wise ID UUID counter. */
-  BKE_lib_libblock_session_uuid_reset();
-
   if (!use_factory_settings || (filepath_startup[0] != '\0')) {
     if (BLI_access(filepath_startup, R_OK) == 0) {
       success = BKE_blendfile_read(C,