fix(wasm): remove prepack script - use prebuilt dist

The dist files are already committed, so we don't need to rebuild
during npm publish. This avoids CI build issues with bunup.

Author: shtse8

packages/synth-wasm-js/package.json

@@ -15,8 +15,7 @@
 		"build:wasm": "cd ../../crates/wasm-js && wasm-pack build --target web --release && cp pkg/* ../../packages/synth-wasm-js/wasm/",
 		"build": "bun run build:wasm && bun run build:js",
 		"build:js": "bunup",
-		"test": "bun test",
-		"prepack": "bun run build:js"
+		"test": "bun test"
 	},
 	"keywords": [
 		"javascript",

packages/synth-wasm-md/package.json

@@ -16,8 +16,7 @@
 		"build": "bun run build:wasm && bun run build:js",
 		"build:js": "bunup",
 		"test": "bun test",
-		"bench": "bun bench/unified.bench.ts",
-		"prepack": "bun run build:js"
+		"bench": "bun bench/unified.bench.ts"
 	},
 	"keywords": [
 		"markdown",