Trim model_generator.sh to only run build_runner on chains we ship

The hardcoded list iterated every cw_* module Cake ever supported, including
the ones we disabled (solana, tron, zano, decred, zcash). Those modules are
still on disk but aren't in pubspec.yaml, so the build_runner pass for them
is wasted work — minutes per fresh setup.

Trimmed to: cw_{core,evm,monero,bitcoin,nano,bitcoin_cash,wownero,dogecoin}.
cw_mweb is untouched (separate loop, only runs pub get not build_runner).

model_generator.sh

@@ -1,7 +1,12 @@
 #!/bin/bash
 set -x -e
 
-for cwcoin in cw_{core,evm,monero,bitcoin,nano,bitcoin_cash,solana,tron,wownero,zano,decred,dogecoin,zcash}
+# Hash Wallet: trimmed to chains we actually ship. The disabled ones
+# (solana, tron, zano, decred, zcash) still have their cw_* directories on
+# disk but aren't in pubspec.yaml, so running build_runner on them is just
+# wasted minutes. Add a chain back to this list if you re-enable it in
+# scripts/{ios,android,linux,macos}/app_config.sh + pubspec_gen.sh.
+for cwcoin in cw_{core,evm,monero,bitcoin,nano,bitcoin_cash,wownero,dogecoin}
 do
     if [[ "x$1" == "xasync" ]];
     then