chore: whitelist `ra` to make RPCs w/o BPAPIs

apps/emqx/test/emqx_bpapi_static_checks.erl

@@ -48,7 +48,7 @@
 
 %% Applications and modules we wish to ignore in the analysis:
 -define(IGNORED_APPS,
-    "gen_rpc, recon, redbug, observer_cli, snabbkaffe, ekka, mria, amqp_client, rabbit_common, esaml"
+    "gen_rpc, recon, redbug, observer_cli, snabbkaffe, ekka, mria, amqp_client, rabbit_common, esaml, ra"
 ).
 -define(IGNORED_MODULES, "emqx_rpc").
 -define(FORCE_DELETED_MODULES, [