feat: Enable plumbing through keep_names to wasm build for better stack traces (#5296)

Co-authored-by: Robert Deaton <me@rdeaton.space>

packages/cli/src/build/request.rs

@@ -393,6 +393,7 @@ pub(crate) struct BuildRequest {
     pub(crate) skip_assets: bool,
     pub(crate) wasm_split: bool,
     pub(crate) debug_symbols: bool,
+    pub(crate) keep_names: bool,
     pub(crate) inject_loading_scripts: bool,
     pub(crate) custom_linker: Option<PathBuf>,
     pub(crate) base_path: Option<String>,
@@ -1025,6 +1026,7 @@ impl BuildRequest {
             base_path: args.base_path.clone(),
             wasm_split: args.wasm_split,
             debug_symbols: args.debug_symbols,
+            keep_names: args.keep_names,
             inject_loading_scripts: args.inject_loading_scripts,
             apple_entitlements: args.apple_entitlements.clone(),
             apple_team_id: args.apple_team_id.clone(),
@@ -4309,7 +4311,10 @@ impl BuildRequest {
             || self.wasm_split
             || !self.release
             || ctx.mode == BuildMode::Fat;
-        let keep_names = self.wasm_split || ctx.mode == BuildMode::Fat;
+        let keep_names = self.config.web.wasm_opt.keep_names
+            || self.keep_names
+            || self.wasm_split
+            || ctx.mode == BuildMode::Fat;
         let demangle = false;
         let wasm_opt_options = WasmOptConfig {
             memory_packing: self.wasm_split,