fix: add unload handler to prevent bfcache [LW-13213] (#1935)

bfcache appears to break extension messaging

Author: mkazlauskas

apps/browser-extension-wallet/src/assets/html/load-app.js

@@ -7,3 +7,8 @@ window.addEventListener(
   },
   { once: true }
 );
+
+// this should prevent https://web.dev/articles/bfcache
+window.onunload = () => {
+  console.log('unload');
+};

apps/browser-extension-wallet/src/assets/html/load-dapp-connector.js

@@ -7,3 +7,8 @@ window.addEventListener(
   },
   { once: true }
 );
+
+// this should prevent https://web.dev/articles/bfcache
+window.onunload = () => {
+  console.log('unload');
+};

apps/browser-extension-wallet/src/assets/html/load-popup.js

@@ -7,3 +7,8 @@ window.addEventListener(
   },
   { once: true }
 );
+
+// this should prevent https://web.dev/articles/bfcache
+window.onunload = () => {
+  console.log('unload');
+};