[fix](trx-frontend-http): group decode history by decoder

Serve grouped decode history payloads and restore each decoder through
explicit history restore hooks instead of replaying a mixed message stream.

This reduces replay overhead further by removing type regrouping and keeping
history restoration on decoder-specific bulk paths.

Co-authored-by: OpenAI Codex <codex@openai.com>
Signed-off-by: Stan Grams <sjg@haxx.space>

src/trx-client/trx-frontend/trx-frontend-http/assets/web/plugins/aprs.js

@@ -447,6 +447,10 @@ window.onServerAprsBatch = function(packets) {
   scheduleAprsHistoryRender();
 };
 
+window.restoreAprsHistory = function(packets) {
+  window.onServerAprsBatch(packets);
+};
+
 document.getElementById("aprs-clear-btn").addEventListener("click", async () => {
   try {
     await postPath("/clear_aprs_decode");