MM-26339 - Add context and CommandArgs to dynamic autocomplete calls (#14940)

* pass commandArgs and pluginContext to dynamic list suggestion calls

* update tests

Co-authored-by: Mattermod <mattermod@users.noreply.github.com>

app/app_iface.go

@@ -190,7 +190,7 @@ type AppIface interface {
 	// based on the type of session (Mobile, SSO, Web/LDAP).
 	GetSessionLengthInMillis(session *model.Session) int64
 	// GetSuggestions returns suggestions for user input.
-	GetSuggestions(commands []*model.Command, userInput, roleID string) []model.AutocompleteSuggestion
+	GetSuggestions(commandArgs *model.CommandArgs, commands []*model.Command, roleID string) []model.AutocompleteSuggestion
 	// GetTeamGroupUsers returns the users who are associated to the team via GroupTeams and GroupMembers.
 	GetTeamGroupUsers(teamID string) ([]*model.User, *model.AppError)
 	// GetTeamSchemeChannelRoles Checks if a team has an override scheme and returns the scheme channel role names or default channel role names.