Trim leading and trailing spaces for search terms (#10989)

app/post.go

@@ -855,7 +855,7 @@ func (a *App) SearchPostsInTeam(teamId string, paramsList []*model.SearchParams)
 }
 
 func (a *App) SearchPostsInTeamForUser(terms string, userId string, teamId string, isOrSearch bool, includeDeletedChannels bool, timeZoneOffset int, page, perPage int) (*model.PostSearchResults, *model.AppError) {
-	paramsList := model.ParseSearchParams(terms, timeZoneOffset)
+	paramsList := model.ParseSearchParams(strings.TrimSpace(terms), timeZoneOffset)
 	includeDeleted := includeDeletedChannels && *a.Config().TeamSettings.ExperimentalViewArchivedChannels
 
 	esInterface := a.Elasticsearch